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250-924 Data Protection Troubleshooting for Windows using NetBackup 5.x

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250-924 exam Dumps Source : Data Protection Troubleshooting for Windows using NetBackup 5.x

Test Code : 250-924
Test denomination : Data Protection Troubleshooting for Windows using NetBackup 5.x
Vendor denomination : Symantec
: 130 actual Questions

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Symantec Data Protection Troubleshooting for

Symantec Backup Exec troubleshooting performance suggestions | killexams.com actual Questions and Pass4sure dumps

Symantec Corp.'s Backup Exec is a favorite facts backup program for laptop and networked storage systems. despite the fact, as with every software, there are issues that may likewise live set incorrectly or issues that can depart wrong with the intention to sluggish performance. within the case of a backup program, a slipup can drastically raise the time it takes to finished your backup jobs. if you're using Backup Exec and your efficiency isn't what it should be, some troubleshooting can live so as. here's a list of expertise issues to seem to live out for.

Get a baseline: peruse at ancient backup logs

start via looking at your ancient backup job logs and celebrate each the plenary time required to lower back up, the dimension of the backups, and the typical velocity. (Go to the "job video display" tab in Backup Exec and select "job historical past.") examine this to the present hasten and total time it takes to complete the job. If there's a substantial slowdown, you're going to should peruse greater closely for feasible explanations.

wreck the process down and check the pace of each and every disk or agent being backed up. To execute this, set up sever jobs for each and every disk or agent being backed up and back them up one at a time. If one disk or agent seems unusually slow, drill down to examine the trigger through examining the job in detail.

determine that the facts isn't being redirected somewhere else. Some file systems allow a directory to encompass data from a file on an additional server within the backup. this can unhurried down the entire backup process.

when you are backing up over a network, that you would live able to verify the outfit throughput through comparing the Backup Exec logs with the logs of windows backup (NTBackup) If the Backup Exec logs replicate loads of circumstances that don't display up in the NTBackup logs, further evaluation is referred to as for. If remote backups aren't working, are attempting backing up from one drive to yet another on the far flung server. examine the logs of the Backup Exec backup and the windows backup. (This assumes you're analyzing a power rather than an agent for a software devotion Microsoft alternate.)

examine for disk fragmentation

make certain to additionally assess that there don't seem to live a lot of little data or directories on the disk. this could unhurried down backups in tons the equal approach fragmentation does by course of requiring loads of reads to regain the tips off the disk for backup.

Disk fragmentation can sluggish performance of Backup Exec greatly. investigate to peruse how fragmented your disks are and defragment if imperative.

flip compression on

tell the Backup Exec to compress any info which will likewise live compressed. Some info, devotion mpegs and jpegs, can not live compressed. if you suspect the difficulty may live within the compression, try switching from hardware to application compression, or vice versa.

be certain your backup application isn't going in the style

Antivirus software will likewise live a particular issue in Backup Exec. Checking every file being backed up for viruses makes no sense and slows backup efficiency. For greater on the interplay between Backup Exec and Norton Antivirus, notice Symantec's Backup Exec discussion board. additionally, the more recent versions of Backup Exec absorb a role known as Tamper insurance policy that can antecedent problems with antivirus utility.

Tape backup with Backup Exec

if you're backing up to tape, power cycle the tape power or library and the server. This may soundless remedy brief problems. This re-initializes the tape outfit and resets the tape gadget's state. This can likewise treatment every exiguous thing from a problem brought about with the aid of a power glitch to a yoke incorrectly set parameters.

The SCSI half (controllers, cables, terminators, and so forth.) of your backup outfit can sap performance if the parameters are set incorrectly when backing as much as tape. investigate the documentation and evaluate the values there with your settings. The determine option should give you a stately ordinary picture of the situation of the SCSI gadget. they could execute the selfsame factor when backing as much as disk, but on account of the random write nature of disk, it does not absorb the difficulty to the equal diploma tape does. Tape needs facts fed at a pleasant even pace that matches the hasten of the tape unit for gold touchstone performance. Disk can ply intermittent slowdowns in the records charge more suitable than tape can because it writes randomly.

Use the 'determine' alternative to verify the health of the SCSI device

The investigate operation is generally restricted through the pace of the SCSI gadget. assess the efficiency by course of inspecting the logs of jobs with assess operations in them. If the investigate speeds are low, determine the SCSI subsystem for feasible bottlenecks.

make certain your controller is rated for the pace of your tape power. for example, an LTO-three tape obligate requires a SCSI 320 community. verify that your tape drives are not connected to a SCSI RAID controller.

among the many other feasible complications with SCSI are fallacious cabling, free or execrable termination and wrong SCSI BIOS settings. additionally live certain the "provoke huge negotiation" alternative is determined to "sure" when you are using a 68-pin cable connector to your tape power.

if you're backing up to disk, check the Backup to Disk (B2D) folder. The B2D folder's main exhaust is to evade the want of information if a instrument fails, however it provides a benchmark for Backup Exec in opposition t an additional machine. You requisite as a minimum 2 Gb of statistics to permit for caches and such. It tends to liquidate complications with the software and the server being backed up as viable factors. peruse at various the B2D pace through copying at least 2 Gb of information to the B2D disk by means of dragging and shedding the file(s). evaluate that with the pace of backing up the identical information. If the pace is in regards to the same, the issue is obviously within the disk subsystem, including the controller.

See Symantec's troubleshooting tip doc for extra Backup Exec troubleshooting advice.

About this writer:Rick cook dinner focuses on writing about considerations involving records storage and facts storage management.


Symantec tops profit estimates as consumer sales upward thrust; shares surge | killexams.com actual Questions and Pass4sure dumps

(Reuters) - Antivirus software maker Symantec Corp shares rose in extended alternate on Thursday after beating profit and revenue estimates in the December quarter and raising counsel on tenacious enterprise and purchaser corporations.

The Symantec logo is pictured on a monitor June 13, 2016. REUTERS/Thomas White/File image

The enterprise additionally announced that its Chief monetary Officer Nicholas Noviello might live stepping down to pursue different alternatives, following a slew of key govt exits on account that late terminal 12 months.

The cybersecurity enterprise’s improbable revenue, boosted through purchaser and business organizations, followed improved-than-anticipated results within the outdated quarter, an indication that the once-afflicted cybersecurity company is on course to cogent growth, in response to analysts.

“Even the decent earnings final quarter nonetheless left investors with some skepticism, but the beat this time will erase a few of these considerations,” said Dan Ives, managing director at Wedbush Securities.

Symantec raised its counsel for the present quarter, projecting March quarter adjusted income between 37 cents and forty one cents per share. Analysts had been anticipating 38 cents.

“After a difficult first half of the 12 months, we’re gaining momentum, and the company is their core seat of attention,” Chief government Officer Greg Clark referred to birthright through the salary call.

regarding the departure of the business’s CFO, Clark referred to Noviello will remain within the role unless mid-2019 as the business searches for a replacement.

there absorb been diverse key govt exits at Symantec late closing 12 months, including these of President and Chief operating Officer Michael Fey, Chief marketing Officer Michael Williams and the senior vice chairman of global sales engineering and product marketing, Bradon Rogers.

Symantec spokeswoman declined to give extra explanation on Noviello’s departure.

income from Symantec’s buyer safety division rose 3 percent to $602 million. The segment accounted for nearly half the business’s total revenue. Analysts on common had anticipated $600.9 million, in response to IBES statistics from Refinitiv.

profits from Symantec’s enterprise protection division fell 2.5 % to $609 million, but beat estimates of $575.6 million, in accordance with IBES records from Refinitiv.

For the latest quarter, Symantec projected a earnings between $595 million and $605 million for its customer enterprise and a income between $595 million and $615 million for its commercial enterprise business. Analysts on generic are expecting the company to submit revenues of $620.5 million and $592.70 million, respectively.

Symantec’s income fell to $sixty five million or 10 cents per share, within the quarter ended Dec. 28, compared with a income of $1.34 billion, or $2.01 per share, a year past.

On an adjusted foundation, the business earned 44 cents per share, well above estimates of 39 cents a share.

salary inched as much as $1.21 billion within the three months ended Dec. 28, above analysts’ touchstone assay of $1.18 billion, in accordance with IBES statistics from Refinitiv.

Symantec shares closed up 1 % at $21.02 on Thursday. The inventory misplaced a third of its value final year, compelled by an investigation over its accounting practices and vulnerable revenue forecasts.

Reporting through Angela Moon in manhattan and Vibhuti Sharma in Bengaluru; enhancing via Peter Cooney and Diane Craft


“No Deal” Brexit might likewise carry functional complications for privateness and statistics insurance course | killexams.com actual Questions and Pass4sure dumps

updated: can likewise 25, 2018:

JD Supra is a criminal publishing carrier that connects specialists and their content with broader audiences of specialists, journalists and associations.

This privateness coverage describes how JD Supra, LLC ("JD Supra" or "we," "us," or "our") collects, makes exhaust of and shares very own statistics accrued from guests to their web site (located at www.jdsupra.com) (our "website") who view most efficient publicly-available content material in addition to subscribers to their services (corresponding to their e-mail digests or creator tools)(our "capabilities"). by using their site and registering for one among their services, you're agreeing to the terms of this privateness coverage.

Please word that if you subscribe to one among their features, you can manufacture choices about how they compile, exhaust and share your information via their privacy middle under the "My Account" dashboard (purchasable if you are logged into your JD Supra account).

collection of information

Registration advice. for those who register with JD Supra for their web page and capabilities, both as an creator or as a subscriber, you might live requested to provide identifying guidance to create your JD Supra account ("Registration data"), akin to your:

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    guidance from third events (equivalent to, from your service provider or LinkedIn): They may additionally likewise acquire information about you from third birthday celebration sources. for example, your organisation might likewise give your counsel to us, corresponding to in connection with a piece of writing submitted by using your service provider for ebook. if you elect to exhaust LinkedIn to subscribe to their web page and services, they likewise assemble counsel concerning your LinkedIn account and profile.

    Your interactions with their web page and capabilities: As is accurate of most websites, they collect certain tips immediately. This tips comprises IP addresses, browser classification, web provider issuer (ISP), referring/exit pages, working system, date/time stamp and clickstream statistics. They exhaust this assistance to analyze trends, to administer the web site and their features, to enrich the content and performance of their website and functions, and to track clients' actions across the website. They may additionally hyperlink this automatically-accrued statistics to own suggestions, as an instance, to inform authors about who has read their articles. some of this statistics is amassed via suggestions despatched with the aid of your net browser. They likewise exhaust cookies and other monitoring applied sciences to compile this advice. To learn greater about cookies and different monitoring applied sciences that JD Supra may additionally exhaust on their website and features gladden notice their "Cookies book" web page.

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    We exhaust the tips and facts they bring together mainly in order to deliver their web page and features. extra specially, they may additionally exhaust your own information to:

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    hyperlinks to different sites

    Our site and features may additionally comprise hyperlinks to different sites. The operators of such different web sites may additionally compile assistance about you, including through cookies or different applied sciences. when you are using their website or capabilities and click on a hyperlink to a further web site, you will leave their site and this policy will no longer drill to your exhaust of and undertaking on these other websites. They motivate you to read the legal notices posted on those sites, including their privateness policies. They aren't chargeable for the information collection and exhaust practices of such different websites. This coverage applies entirely to the information collected in connection with your exhaust of their web site and capabilities and does not apply to any practices carried out offline or in reference to another sites.

    information for european and Swiss Residents

    JD Supra's foremost location of business is in the united states. by subscribing to their web site, you expressly consent to your guidance being processed in the united states.

  • Our criminal basis for Processing: generally, they reckon on their dependable pursuits so as to procedure your own counsel. as an instance, they weigh on this felony floor if they exhaust your own counsel to manage your Registration records and administer their relationship with you; to carry their website and functions; stand in mind and enlarge their website and capabilities; record reader analytics to their authors; to personalize your adventure on their site and functions; and the space quintessential to give protection to or preserve their or an extra's rights or property, or to detect, steer pellucid of, or in any other case tackle fraud, security, security or privacy concerns. gladden notice Article 6(1)(f) of the E.U. regular records coverage regulation ("GDPR") furthermore, there may well live other situations the space different grounds for processing may likewise exist, reminiscent of where processing is due to the legal necessities (GDPR Article 6(1)(c)) or for explanations of public activity (GDPR Article 6(1)(e)). gladden notice the "Your Rights" element of this privateness policy instantly below for greater suggestions about how you can likewise request that they limit or chorus from processing your personal tips.
  • Your Rights
  • right of entry/Portability: that you may ask to evaluation details in regards to the assistance they dangle about you and the course that advice has been used and disclosed. note that they may additionally request to assess your identification earlier than enjoyable your request. you could likewise request that your own suggestions is supplied to you in a prevalent digital format so for you to share it with different corporations.
  • correct to suitable information: You can likewise ask that they manufacture corrections to any counsel they cling, if you believe such correction to live indispensable.
  • appropriate to preclude Their Processing or Erasure of suggestions: You likewise absorb the usurp in certain instances to ask us to avoid processing of your own suggestions or to erase your personal suggestions. where you absorb got consented to their exhaust of your own information, which you can withdraw your consent at any time.
  • You can manufacture a request to endeavor any of these rights by using emailing us at privacy@jdsupra.com or with the aid of writing to us at:

    privateness OfficerJD Supra, LLC10 Liberty Ship approach, Suite 300Sausalito, California 94965

    you could additionally exploit your profile and subscriptions through their privacy seat under the "My Account" dashboard.

    we are able to manufacture complete practical efforts to treasure your wishes. There may live instances, besides the fact that children, where they aren't able to fulfill your request, for instance, if apposite legislation prohibits their compliance. gladden note that JD Supra doesn't exhaust "automatic resolution making" or "profiling" as these terms are defined within the GDPR.

  • Timeframe for conserving your own tips: they will retain your personal information in a benevolent that identifies you simplest for as lengthy as it serves the goal(s) for which it changed into in the birth accrued as cited in this privateness policy, or because of this licensed. They may additionally proceed processing your personal tips for longer periods, however most efficient for the time and to the extent such processing moderately serves the functions of archiving in the public pastime, journalism, literature and paintings, scientific or ancient research and statistical analysis, and domain to the protection of this privateness coverage. for instance, when you are an writer, your personal assistance can likewise proceed to live published in reference to your article indefinitely. after they don't absorb any ongoing reputable company requisite to manner your personal information, they can either delete or anonymize it, or, if here's no longer viable (as an example, because your very own counsel has been stored in backup archives), then they will securely shop your personal tips and sequester it from any extra processing until deletion is viable.
  • Onward transfer to 3rd events: As stated in the "How They share Your facts" section above, JD Supra may additionally share your assistance with third parties. When JD Supra discloses your very own suggestions to third events, we've ensured that such third events absorb either certified below the ecu-U.S. or Swiss privacy protect Framework and will process complete personal statistics acquired from eu member states/Switzerland in reliance on the apposite privateness consume reliance of Framework or that they've been subjected to strict contractual provisions in their condense with us to guarantee an satisfactory smooth of statistics insurance course in your information.
  • California privacy Rights

    Pursuant to section 1798.eighty three of the California Civil Code, their consumers who're California residents absorb the usurp to request certain tips related to their disclosure of non-public information to third events for his or her direct marketing purposes.

    You could manufacture a request for this counsel by means of emailing us at privateness@jdsupra.com or by using writing to us at:

    privateness OfficerJD Supra, LLC10 Liberty Ship way, Suite 300Sausalito, California 94965

    Some browsers absorb incorporated a don't song (DNT) feature. These points, when grew to become on, forward a signal that you simply opt for that the site you're visiting now not collect and exhaust records regarding your on-line shopping and browsing activities. As there is not yet a touchstone understanding on how to interpret the DNT sign, they presently execute not reply to DNT alerts on their site.

    entry/proper/update/Delete own suggestions

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    changes in Their privacy policy

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    Contacting JD Supra

    if you absorb any questions on this privacy coverage, the practices of this web site, your dealings with their web site or functions, or if you'd devotion to alternate any of the guidance you absorb offered to us, gladden contact us at: privacy@jdsupra.com.

    As with many websites, JD Supra's website (observed at www.jdsupra.com) (our "web page") and their functions (such as their e mail article digests)(our "capabilities") exhaust a common know-how called a "cookie" and different similar applied sciences (similar to, pixels and internet beacons), that are little information info that are transferred to your desktop if you exhaust their site and features. These applied sciences instantly identify your browser on every occasion you engage with their web site and features.

    How They exhaust Cookies and different tracking applied sciences

    We exhaust cookies and other monitoring technologies to:

  • improve the user sustain on their website and functions;
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    Analytics/efficiency Cookies. JD Supra additionally makes exhaust of the following analytic outfit to aid us analyze the efficiency of their web site and services as well as how friends exhaust their site and services:

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    The procedures for controlling and deleting cookies fluctuate reckoning on which browser you use. To learn how to accomplish that with a selected browser, that you would live able to exhaust your browser's "support" role or then again, which you could talk over with http://www.aboutcookies.org which explains, step-through-step, a course to manage and delete cookies in most browsers.

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    Data Protection Troubleshooting for Windows using NetBackup 5.x

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    Using Symantec NetBackup OpenStorage for disk-to-disk backup and recovery | killexams.com actual questions and Pass4sure dumps

    Three of the substantial headlines so far this year absorb been data growth, the economy and data deduplication in backup. The first headline, relentless data growth, is the root antecedent of most issues in the backup environment. In an endeavor to meet service-level agreements (SLAs) for data backup and recovery, more and more organizations are deploying disk in the backup process. With disk, IT organizations can better meet backup windows and recovery objectives. But as IT "modernizes" its backup infrastructure with disk-to-disk backup, unusual problems emerge -- specifically, the cost of managing copies stored on disk, and the feasibility of taking disk-based backup copies and making them portable for offsite and/or long-term storage.

    Deduplication addresses the first issue -- it changes the economics of disk-based backup, allowing more data to live stored in a smaller footprint. The second problem is the unusual smart point for linger users that absorb adopted disk. How can they rapidly, securely, cost-effectively, and efficiently regain data offsite for calamity recovery (DR) or long-term retention? Sure, most target devices with deduplication can replicate copies, but is the backup application's catalog conscious of the copy? That's where Symantec Corp. Veritas NetBackup OpenStorage (OST) technology comes in.

    Symantec announced its NetBackup OpenStorage initiative a few years ago. It is designed to allow NetBackup users to utilize third-party storage solutions without the requisite for tape emulation.

    Available as an option for NetBackup 6.5 and higher, NetBackup OpenStorage gives NetBackup a common interface for third-party disk targets. NetBackup sees OST-enabled appliances as disk, enabling features such as intellectual capacity management, media server load balancing, reporting, and lifecycle policies. It likewise delivers optimized duplication. Without OST, NetBackup media servers absorb to manage complete duplicate backup copies, which means that data must live transferred across the LAN, WAN, or SAN from the primary site secondary storage to a NetBackup media server and then to the calamity recovery site storage medium (i.e., another appliance of the selfsame kind or tape media). With OST, the OST-enabled device is doing the replication and the data path does not involve NetBackup media servers. This means that only changed segments are replicated, creating savings in bandwidth and, importantly, time. NetBackup is conscious of complete copies and those copies supervene established retention policies.

    Symantec Technology Enabled Program (STEP) partners -- such as Data Domain, EMC Corp., FalconStor Software, and Quantum Corp. -- leverage the NetBackup OpenStorage technology API to create plug-ins for their storage systems. OST allows for backup data to live stored on disk with whatever protocol the target device uses, such as a Fibre Channel or TCP/IP. Based on NetBackup policies or commands, the OST-enabled device will create, duplicate or delete copies.

    One of the more inviting byproducts of the exhaust of the NetBackup OpenStorage interface is the performance improvement in backup. Several STEP partners with an OST-enabled solution title 50% to100% improvement in backup performance. Richard Nosal, a server administrator for lofty Point Regional Health System in Greensboro, N.C., implemented the NetBackup OST option with a Data Domain DD660 and saw his pre-OST 10-hour backup window with a virtual tape library slice in half.

    Since the NetBackup catalog is conscious of complete copies, recovery of data from a NetBackup OpenStorage-optimized duplicate copy is the selfsame as recovery from another duplicate. Through NetBackup's Backup-Archive-Restore GUI, the OST-optimized duplicate copy can live designated as the primary copy and then a plenary or granular recovery can live initiated. The potential time savings over recovery from a non-OST-optimized duplicate could live significant.

    About this author:Lauren Whitehouse is an analyst with Enterprise Strategy Group and covers data protection technologies. Lauren is a 20-plus-year veteran in the software industry, formerly serving in marketing and software progress roles.


    Network Design Strategies | killexams.com actual questions and Pass4sure dumps

    This chapter, from Upgrading and Repairing Networks, 5e, looks at the network's rational and physical design to assist your planning when creating a unusual network.

    This chapter is from the engage 

    Many types of networks were discussed in Chapter 1, "A Short History of Computer Networking," from ARPANET to TCP/IP. And in Chapter 2, "Overview of Network Topologies," you learned about the various topologies you can employ when designing and creating a local area network (LAN), and they likewise looked at some scenarios in which several networks were connected to figure a wide area network (WAN). In this chapter, they will peruse at another aspect of creating a network: the network's rational and physical design. The physical aspects of your LAN will depend on the underlying physical transport technology—Ethernet or Token-Ring, for example, or possibly ATM, which is supported as a LAN protocol in products such as Windows 2000/XP, Windows Server 2003, and Linux. Depending on which technology you use, there will live one or more LAN topologies from which to choose.

    Before you can start to design a physical network, however, you first must determine your needs. What services must you provide to your user community? What are the resources you'll need? If you absorb to compromise, what will it consume to fullfil the most users or to provide the more considerable services? You then will absorb to consume into account network protocols, applications, network speed, and, most important, network security issues; each of these figures into a network's rational design. Another considerable factor your management will probably obligate you to consider is cost—you can't forget the budget. These factors manufacture up the rational design for your network. You first should settle what you requisite and what it will consume to provide for those needs.

    If you are creating a unusual network and purchasing unusual applications, you will probably spend most of your time considering the licensing and other pecuniary costs (training users, network personnel, and so on). If you are upgrading older applications, several other factors arrive into consideration. Many applications that were coded using COBOL, BASIC, FORTRAN, and other languages that helped jumpstart the computer age may absorb built-in network functionality based on older proprietary network protocols. If this is the case with your network, you absorb to consider several things. What will it cost to update thousands of lines of code (or more) to more modern versions of the selfsame programming language? What will it cost to upgrade these programs to newer object-oriented languages? To save money, can you upgrade portion of your network and exhaust gateway hardware/software to connect to older network components?

    Because of the costs associated with coding applications that were created many years ago, and the expenses that will live required to update them to modern programming languages, you may live forced to maintain legacy applications for a few years while replacement applications are designed and created. You may find a packaged application that can live used to replace older programs. This problem will apply mostly to proprietary computer architectures, instead of Windows or Unix platforms. If you can simply manufacture minor changes and compile the source code so that it will Run on a newer operating system, your costs will live much less than if you absorb to re-create the applications your users requisite from scratch. Another cost associated with upgrading to unusual programs is training users and help-desk personnel.

    When you course a rational network design, you can start from one of two places. You can design and install a unusual network from scratch, or you can upgrade an existing network. Either way, you should collect information about several considerable factors before you start the rational design. For example, depending on the services that will live provided to clients, you might requisite to analyze the feasible traffic patterns that might result from your plan. Locate potential bottlenecks and, where possible, alleviate them by providing multiple paths to resources or by putting up servers that provide replicas of considerable data so that load balancing can live provided. The following are other factors to consider:

  • Who are the clients? What are their actual needs? How absorb you determined these needs—from user complaints or from help-desk statistics? Is this data reliable?
  • What kinds of services will you provide on the network? Are they limited in scope? Will any involve configuring a firewall between LANs? And if so, that soundless doesn't account for configuring a firewall to enable access to the Internet.
  • Will you requisite to allow an Internet connection for just your internal network's users, or will exhaust you requisite to allow outside vendors access to your network? One instance that comes to mind is the Internet Printing Protocol (see Chapter 24, "Overview of the TCP/IP Protocol Suite"). What will it cost to evaluate what benevolent of services user groups requisite to access from the Internet? Will you requisite to allow complete users to exhaust email—both within the internal network and through the firewall on the Internet? The selfsame goes for what sites users will live allowed to access using a network browser and other network applications. Will you absorb users who toil from home and require dial-in or VPN access through the Internet?
  • Can your users tolerate a exiguous downtime now and then due to network problems, or is it necessary to provide a high-availability network? Will you requisite clustered servers to provide for a lofty degree of uptime, or execute your users' applications not suffer from a temporary loss of the exhaust of a server? To provide for maximum uptime, can you afford to build redundancy into your network? For example, Chapter 2 discusses redundant topologies that can live used to preclude a lone point of failure from making the network (and its resources) unavailable. Chapter 11, "Network Attached Storage and Storage area Networks," describes methods you can exhaust to mirror data at geographically faraway locations.
  • In an existing network, will you retain the current protocol or upgrade to a different protocol standard? If you create a network from scratch, what factors should influence your network protocol decision? Ethernet is the most favorite LAN technology in the world today. TCP/IP is the most favorite protocol suite that runs on Ethernet. Yet there are cases in which other technologies absorb their niches. consider the implications (such as support costs and security) to maintain older, proprietary protocols.
  • Who Are Your Clients?

    This seems devotion a very simple question. However, I'm not saying, "What are your clients' names and how well execute you know their children?" I am referring instead to your knowledge of the job descriptions for the users on the network. You requisite to assess toil patterns for various departments so that you can appropriately space servers, high-bandwidth links, and other such things in the usurp physical location of the network. If most of the network traffic you hope to notice will arrive from the engineering department, you'll requisite to provide that department with a large data pipe. In Chapter 4, "Upgrading Strategies and Project Management," you'll find more information about surveying the user community to arrive up with a course that places resources where they are needed.

    What Kinds of Services or Applications Will the Network Offer?

    Of course, everyone knows that the most considerable role of a network today is to support multiuser gaming. Seriously, though, you requisite to manufacture a list of the kinds of applications currently in use, as well as a list of those requested by users. Each application should absorb a written risk assessment document that points out potential security problems, if any. Typical network applications today involve FTP, telnet, and, of course, browsing the Web. There are "secure" versions of these applications and there are versions that leave a door wide open into your network. Whatever list of applications you chose to support over the network, retain in mind two things:

  • Is the application safe? Most applications today arrive in secure versions or can live used with a proxy server to befriend minimize the possibility of abuse. Yet, as they complete absorb seen, even the largest corporations are targets at times, and those companies absorb the staff that should live able to preclude these things from happening. Because proxy servers are an considerable component of firewalls, this theme is covered in greater detail in Chapter 45. If you want a secure network, this is highly recommended reading!
  • Does one application overlap another? Every user has his or her favorite application. Some people devotion one word processor, whereas others prefer a different one. But when dealing with applications or application suites (such as Microsoft Office), you'll find it better to manufacture a decision and stick with a lone product if it can fullfil the needs of your users. They might not devotion it, and training might live necessary, but supporting multiple applications that execute the selfsame thing wastes money and leads to confusion.
  • A commonly overlooked mode for getting data files out of a network and onto the Internet is to simply forward the files as an attachment to an email. So if you reflect you've blocked file transfers by disabling FTP access through the firewall, this instance should indicate that you really execute requisite to execute a thorough evaluation of any unusual application or service you will allow on the network. unusual applications should live justified with facts that indicate why they are needed. If an existing application can live used to accomplish the selfsame goal, why execute you requisite another application? Should you retire the older application and exhaust a newer one? Pay attention to the details. And don't forget to test unusual applications to ensure that they accomplish as expected. The selfsame goes for older applications—will they toil on the unusual or upgraded network?

    Lastly, execute you monitor network usage? execute you want to permit users to spend their days browsing the Net, or checking personal email while at work? Many companies absorb policies that apply to using the telephone for personal business. execute you overlook this situation when giving users email capability? Are you preventing access to sites that are obviously not business-related?

    What Degree of Reliability execute I Require for Each Network Link?

    Just how much downtime is acceptable? For most users, the retort would live zero. considerable components of your network, such as file servers, should absorb foible tolerance built in from the bottom up. In large servers, you'll find dual-redundant power supplies (each connected to a sever UPS), and disk arrays set up using RAID techniques to provide for data integrity in the event that a disk goes south. If a link between two offices needs to live up 100% of the time, you should course for multiple links between the two sites to provide a backup capability. In this case, you likewise can justify the cost of the extra link by using load balancing so that network response time is improved. And, if you are using multiple links to remote sites, it's always a cogent thought to absorb more than a lone path to the site. At one site this author worked at, there were redundant power lines bringing electricity into the site—side-by-side. If a tree falls, will it bring down one or both of those power lines?

    Another technology that can live used to provide an extra layer of redundancy, as well as high-speed access to storage devices, is the Storage area Network (SAN). A SAN is a network that is sever from the LAN and contains only storage devices and servers that requisite to access those devices. Because the network bandwidth is not shared with LAN users, multiple servers can access the selfsame storage. If one server fails, other servers can live configured to provide redundant access to the data. Also, the selfsame RAID and other redundancy techniques used for storage devices that are directly attached to a server (such as the SCSI hardware and protocols) can live used on a SAN.

    arrow.jpg

    The terms RAID and UPS are considerable in today's networks, as is the concept of load balancing and dual-redundant power supplies in large networks. You can find out more about RAID (Redundant Array Of Independent Disks) and UPSs (uninterruptible power supplies) by reading Chapter 5, "Protecting the Network: Preventative Maintenance Techniques." For more information about SANs, notice Chapter 11.

    The conventional adage "If it ain't broke, don't fix it" doesn't apply to networks. You should always live proactively looking for potential lone points of failure and doing something to fix them. By structure redundancy into the network design at the start, you'll save yourself a lot of grief in the future.

    Chapter 5 can give you more suggestions about using clustering, backups, uninterruptible power supplies, and other techniques that can retain the network up and running.

    Choosing a LAN Protocol

    Today the de facto protocol of altenative has to live TCP/IP. However, other protocols absorb their space in some upright markets. In this book, they talk about NetWare. NetWare has been around so long that you might find you absorb no altenative when designing an upgrade but to retain using IPX/SPX, depending on the applications your network uses. However, even NetWare has moved toward using TCP/IP as the underlying protocol. This is basically the case for version 5.x and 6.x of NetWare. Older NetWare networks should upgrade, if possible, to one of these newer versions. If you will live connecting the network to the Internet, TCP/IP will live a necessity. Even if you don't hope to absorb an Internet connection, you'll find that choosing TCP/IP is a more practical altenative today because most applications toil with it and there is a large market of trained professionals who can live hired to manage a network built on TCP/IP. NetWare 6.x provides backward compatibility with IPX/SPX for the most part, but newer features such as the iPrint—which uses the Internet Printing Protocol—require TCP/IP.

    In addition to transport protocols such as TCP/IP and IPX/SPX, you must consider application protocols that can live used on the network. For example, to simplify administering configuration information for a large number of computers, you might want to exhaust the Dynamic Host Configuration Protocol (DHCP), which is discussed in Chapter 28, "BOOTP and Dynamic Host Configuration Protocol (DHCP)." If you want to provide a central denomination resolution service, you might elect the Domain denomination Service (DNS), which is covered in Chapter 29, "Network denomination Resolution." If you are going to operate a Windows network that has pre–Windows 2000/XP clients, you might requisite to exhaust the Windows Internet Naming Service (WINS) for backward compatibility.

    So when thinking about a network protocol, recollect that it's not just one protocol you requisite to worry about. After you've decided which protocols are necessary, research the security implications of each.

    It's Virtually Universal: TCP/IP

    For complete practical purposes, the touchstone LAN protocol today is TCP/IP. This is partly due to the rapid growth of the Internet, and the necessity of most businesses of having a Web presence, as well as the large number of vendors that absorb adopted this protocol suite. If your LAN is soundless using an older proprietary network protocol, you should seriously consider what it would consume to upgrade to TCP/IP. Currently, TCP/IP version 4 is the most widely used protocol. In the future you can hope that the next version (IPv6) will start to find its course from the core of the Internet out to the edge, where your network resides. While technologies such as Network Address Translation (NAT) are widely employed to remedy the problem associated with the limited address space provided by IPv4, IPv6 will enable a much larger address space. Combine that with Network Address Translation, and the long-term bets are going to live on IPv6, or possibly some of the features that are portion of IPv6. In addition to giving you a larger address space, IPv6 includes other considerable features. Those that will influence your network the most are security mechanisms, which will only become more considerable as Internet commerce continues to grow.

    arrow.jpg

    For a particular introduction to TCP/IP, notice Chapter 24, "Overview of the TCP/IP Protocol Suite"; Chapter 25, "Basic TCP/IP Services and Applications"; and Chapter 27, "Troubleshooting Tools for TCP/IP Networks."

    There is one very considerable judgement you should consider TCP/IP as a LAN protocol: There are more trained professionals knowledgeable in TCP/IP than any other LAN protocol at this time. It is inviting to note that in Windows NT 3.51, the default network protocol was Microsoft's implementation of IPX/SPX (NWLink). In Windows NT 4.0 (and successive operating systems, from Windows 2000, XP, and Server 2003), the default network protocol is TCP/IP.

    If your network is composed of several operating systems, from Windows to NetWare to Unix and Linux, then the bottom line is that TCP/IP is the lowest common denominator that will allow the easiest connectivity and interaction between complete of these. Even Microsoft's now-legacy NetBIOS/NetBEUI protocols absorb been adapted to Run over TCP/IP.

    Novell's NetWare Version 6.5

    NetWare was perhaps the first attempt at seriously providing a LAN protocol that was simple to use. The basic file and print services offered by early versions of NetWare were much better than other solutions available at that time. After it became established in the business community, NetWare became the network solution of altenative in many business environments that used the PC. Microsoft countered this success with its LANManager products, which were likewise marketed by other vendors in their own way, such as the Pathworks solution from Digital outfit Corporation.

    Today NetWare is a totally revamped solution to LAN connectivity. It provides many unusual features that are addressed to specifically manufacture exhaust of the Internet, and allow mobile users to connect to their home networks, as well as to enable NetWare users to manufacture connections to outside networks. For example, the iPrint feature enables NetWare users to print to a printer on a remote network. For example, instead of sending a catalog that may live out of date in a month or so, you can exhaust iPrint to periodically forward specific information apposite to each customer, by printing it directly to the customer's printer.

    And NetWare's iFolder allows mobile users to synchronize data stored on remote computers (such as a laptop computer) with the data stored on the company's network. Microsoft and other vendors offer similar features. However, the point to recollect is that if you already are a NetWare user, you don't absorb to sling out your existing investment and roam to a Microsoft network, or even a Unix/Linux environment. NetWare has changed as the market has changed, and you might find it less expensive to upgrade to NetWare 6.5 than to migrate to another platform. The bottom line involves not just the cost of migrating to another operating system, but the costs involved with retraining your network administrative personnel in unusual technology.

    Because NetWare 6.5 is so tightly integrated with the IP protocol, and likewise offers backward compatibility with IPX/SPX, admins for existing NetWare networks should consider upgrading to NetWare 6.5 as well as considering other options.

    If you want to roam to Linux, Novell makes it simple by incorporating an enhanced version of NetWare 6.5 and SuSE Linux into its Novell Open Enterprise Server. Open Enterprise Server supports both Linux and NetWare-specific software and features, enabling you to roam to Linux gradually.

    Other LAN/WAN Protocols

    The distinction between LAN and WAN (wide area networking) protocols is birth to blur. Ethernet was once considered to live a LAN protocol. As time has passed, other technologies, such as Token-Ring, absorb become minor players in the LAN world. Yet the contradictory is accurate of Ethernet. It has grown from a modest specification endorsed by Intel, DEC, and other vendors, such that it now can live considered a WAN protocol. The capabilities introduced by current LAN technologies are birth to erode the differences between a LAN and a MAN (metropolitan area network). When the fourth edition of this engage was published, Gigabit Ethernet was starting to tumble into the inexpensive ambit of network topologies. That trend has continued and now 10Gigabit Ethernet (10GbE) is frequently being used in enterprise data centers. Today you may live using 100BASE-T for connecting client computers to the network, and Gigabit Ethernet to connect network segments via the network backbone. In some cases your network might even live exclusively based on 10GbE.

    What does this spell to a network administrator today? With 10Gigabit Ethernet, you can exhaust TCP/IP not only to create a local area network backbone, but to extend that compass to a metropolitan area network. And because TCP/IP is so intertwined with Ethernet, you can achieve an end-to-end MAN link that uses TCP/IP over faster Ethernet connections. Instead of employing more expensive solutions, such as SONET, you can now connect offshoot offices in the selfsame geographical area using just TCP/IP.

    You may not absorb to worry about installing expensive outfit used by SONET and other typical MAN protocols. Still, for the long haul—for example, between different cities—other protocols such as ATM and Frame Relay will arrive into play.

    arrow.jpg

    For more information about SONET, ATM, and Frame Relay, notice Chapter 15, "Dedicated Connections."


    Samsung progression 5 Chromebook 550 review: Is less more? | killexams.com actual questions and Pass4sure dumps

    Chrome OS is an operating system designed to Run one app: the web browser. As such, there is virtually nothing you can execute on a laptop running Chrome OS that you can’t also do on a Windows, Mac, or Linux laptop with the Google Chrome web browser installed.

    But that’s beside the point. The point of a Chromebook devotion the Samsung progression 5 Chromebook 550 is that for many people the web browser is the lone most considerable app on any computer. So why blow system resources supporting anything but the browser?

    The Samsung progression 5 Chromebook 550 boots in less than 10 seconds and resumes from sleep nearly instantly. The keyboard features keys designed specifically for web browser functions. Why press F5 to refresh a web page when you can just hit the refresh key?

    Samsung’s second Chromebook features a faster processor, more memory, and generally faster performance than the original progression 5 Chromebook I reviewed in 2011. Chrome OS has likewise changed quite a bit in the past year. Google has added a taskbar and desktop and made it feasible to view multiple browser windows side by side.

    I’m soundless not certain Chromebooks are ready for prime time — but the Samsung progression 5 Chromebook 550 is certainly a lot more ready for early adopters of the cloud computing paradigm than the Samsung and Acer Chromebooks released in 2011. It’s faster, doesn’t freeze or crash as often, and feels more devotion a full-fledged laptop.

    It likewise helps that there are more web apps offering desktop app-like functionality every day.

    You can’t Run Adobe Photoshop or Microsoft office on a Chromebook. But you can Run web apps such as Aviary or Google Docs instead. There are a growing number of web apps that toil devotion desktop apps — but since they’re hosted online you’ll never requisite to install an update. And your files and documents are stored online, so you can access them from any computer.

    A Chromebook is likewise less vulnerable to malicious attacks than a Windows computer — because you never download and install any software on a Chromebook at complete (unless you weigh operating system updates downloaded directly from Google).

    There are a lot of things to devotion about a Chromebook devotion the Samsung progression 5 Chromebook 550. And if you spend most of your time on a computer using a web browser, it might live worth taking a leap.

    But Chromebooks aren’t ready for everyone just yet. They’re exiguous more than paperweights when you don’t absorb an internet connection handy. Printing is more complicated on a Chromebook than on a more traditional laptop. And with a starting charge of $450, it may live arduous to justify spending money on a computer that does less than a Windows, Mac, or Linux laptop… even if in this case, less is supposed to live a feature, rather than a bug.

    Google and Samsung loaned me a Chromebook 550 to exhaust for a few weeks while preparing this review.

    A WiFi-only version of the Chromebook is available for $450, while a 3G model which comes with 100MB of free data from Verizon Wireless costs $550.

    Overview

    The first time you hit the power button on the Chromebook a screen will appear asking you to connect a wireless network and enter your Google user denomination and password, or create a unusual account if you don’t already absorb one.

    Even the first boot only takes a few seconds and you can start using the Chromebook birthright away after logging in.

    If you’ve used the Chrome web browser on a Windows, Mac, Linux, or Android device, logging in is complete it takes to import your history, bookmarks, extensions, apps, and other settings. The first sync can consume a few minutes, but you can depart ahead and start surfing the web even before it’s finished.

    When Chrome OS initially launched, there was nothing to notice in the operating system except the web browser. It took up the plenary screen and the only incompatibility between Chrome OS and the Chrome browser on other platforms was the inclusion of clock, wireless, and battery indicators in one corner.

    Now those indicators absorb been moved to a taskbar at the bottom of the screen. It fades away when you’re not using it, but you can bring it up just by scrolling your mouse cursor to the bottom edge of the display.

    You can tap the indicators to bring up sliders for screen brightness and volume, a wireless connection manager, and other tools.

    The taskbar likewise shows a list of currently open browser windows, with favicons for each window letting you know which page is open in that window.

    There’s likewise an Applications icon you can press to bring up a plenary list of available apps. It looks a lot devotion the app drawer in Android or an iOS home screen, with apps arranged along a grid.

    You can tap any icon to launch an app, or right-click to pin an app to the launcher or access other advanced options.

    On the left side of the taskbar there’s a space for you to a space for your pinned apps in the launcher area.

    While the taskbar is one of the biggest changes Google made to Chrome OS this year, the company has likewise made a little but very considerable change: You don’t absorb to Run the web browser as a plenary screen app anymore. You can open two or more browser windows and view them side by side, cascade them, or sort them any course you like.

    When I talk about apps, what I really spell are web pages. But these are web pages which you’ve saved to your account for simple access. Some of these apps likewise consume odds of special features in the web browser such as the competence to download information for offline access.

    For instance, you can sync your device with Google Calendar so that you can view your calendar even when you don’t absorb an vigorous internet connection.

    But one of the biggest challenges presented by Chrome OS is the fact that most web apps aren’t available when you can’t access the web — and even those that are may not toil properly if you haven’t synchronized your data first. A Chromebook is clearly designed to live used first and foremost with an internet connection, and will live of limited exhaust in a subway, on an airplane, or in another environment where you may not absorb dependable internet access.

    That said, I was surprised at just how much I was able to accomplish while using the progression 5 Chromebook 550. A few years ago I might absorb organize it difficult to regain any toil done on a computer without Irfanview, GIMP, Microsoft Office or LibreOffice, and other tools I exhaust for work. Today there are web apps that meet most of my needs — and Chrome OS even has a very basic image editor built in (as does the WordPress web app, so between the two of them I can crop and resize pictures without even relying on a third party web app).

    If I soundless worked as a radio producer, a Chromebook might not live a stately laptop replacement, since editing audio would live a bit of a headache. And I’m not certain I’d want to exhaust a Chromebook to upload 1GB videos to YouTube when it would live faster and more efficient to exhaust a Windows PC to transcode them to 100MB MP4 files first.

    But during the few weeks that I’ve had a Chromebook around, I’ve organize myself often grabbing it when I requisite to write a blog post, execute some quick web browsing, or even watch some online video — because it’s the fastest, most responsive device in the house at the second which has a decent keyboard.

    It turns on almost as quickly as an Android tablet, but I can kind about 100 words per minute on a Chromebook, while I’d live lucky to tap out 20 words in a minute on a tablet or phone with an on-screen keyboard.

    Design

    Samsung’s $450 Chromebook has an all-plastic case with a metallic gray finish. The lid and palm rest area peruse devotion they’re covered in brushed aluminum, but that’s just a textured finish on the plastic.

    That’s not necessarily a execrable thing. The plastic case helps retain the charge down, and the laptop is soundless reasonably thin, light, and attractive — although there’s a bit of flex in the keyboard area if you’re the sort of person that likes to hammer down arduous on your keys.

    The laptop measures 11.5″ x 8.5″ x 0.83″ and weighs just over 3 pounds. That makes it a hair thicker than a typical ultrabook, but if you placed the progression 5 Chromebook 550 next to an ultrabook you’d live forgiven for having a arduous time telling the two apart.

    Like an ultrabook the Chromebook has a sealed bottom panel — there’s no simple course to upgrade the  memory or storage, or even replace the 51Whr battery.

    Fortunately the laptop gets reasonably cogent battery life, with between 6 and 7 hours of Run time. And unlike the original Samsung progression 5 Chromebook which had just 2GB of RAM, the unusual model has 4GB which seems to live more than enough for everyday computing in Chrome OS.

    The laptop has just 16GB of storage thanks to a relatively little solid situation disk — but that’s because you don’t requisite disk space to install files and Google wants you to exhaust web storage for your documents, music, and other files.

    Samsung’s unusual Chromebook is powered by a 1.3 GHz Intel Celeron 867 dual core processor with Intel HD 3000 graphics. It’s not exactly a hasten demon, but it’s speedy enough for web browsing — and offers a huge performance boost over the Intel Atom N570 chip that was used in terminal year’s model.

    The laptop has a 12.1 inch, 1280 x 800 pixel display matte display. Samsung is one of the only PC makers that seems to manufacture laptops with matte displays, and while they might not peruse as cogent on the store shelf (because they’re less shiny), they peruse a lot better outdoors or near a quick-witted window (because they’re less shiny).

    Unfortunately the viewing angles leave a lot to live desired. Colors wash out and the screen gets arduous to notice if you tilt back the screen more than a few degrees. Maybe that’s why the laptop lid doesn’t open very wide at all.

    Viewing angles are much better from the side, which means you can probably watch a video with the person sitting in the seat next to you — as long as they’re about the selfsame height. If their eyes are much higher or lower than yours, the screen will live practically invisible.

    On the left side of the Chromebook you’ll find a power jack, a full-sized Ethernet port (with a exiguous plastic hinge that drops down to accommodate an Ethernet adapter, a DisplayPort, USB 2.0 port, and headset jack.

    The DisplayPort is the only video output, so if you want to connect an external monitor you’ll requisite to either manufacture certain it supports this relatively unusual touchstone or regain an adapter.

    On the birthright you’ll find a second USB 2.0 port and an SD card reader which is covered by a exiguous plastic door. Instead of popping open the door though, complete you absorb to execute to exhaust a twinkle card is thrust it birthright into the door, which slides inward to manufacture latitude for the SD card.

    There are stereo speakers and several vents on the bottom of the laptop. The fans can regain a bit loud at times, especially when you’re watching videos or performing other tasks that tax the CPU.

    The speakers are reasonably loud and pellucid — but they’re laptop speakers. If you really want decent sound, plug in some headphones.

    Around the back of the laptop you’ll find a SIM card slot on 3G capable models.

    Samsung has been making 11 and 12 inch laptops for a while, so the company knows how to manufacture a decent keyboard. The progression 5 Chromebook 550 has an island-style keyboard with flat black keys floating in a sea of grey plastic, with a exiguous space between each key. I organize typing to live reasonably cozy and didn’t absorb any problems typing at plenary speed.

    Something that sets a Chromebook apart from a typical laptop though, is the browser-specific keys. There’s no row of F keys above the row of number keys, for instance. Instead you absorb single-function keys such as forward, back, refresh, and plenary screen. There are likewise keys for adjusting the volume and screen brightness in this row.

    On the left side of the keyboard you’ll likewise find a dedicated search key. This laptop does Run an operating system designed by a search engine company, after all.

    Unfortunately there are a few keys that aren’t on the keyboard which you might miss. There are no Page Up, Page Down, Home, End, or Del keys.

    There are keyboard shortcuts for each of those functions. But they require far more keystrokes than seem absolutely necessary for keys that are so commonly used when surfing the web or writing documents or email messages.

    Here are a few of those shortcuts:

  • PgUp: Alt+Up arrow
  • PgDn: Alt+Down arrow
  • Home: Ctrl+Alt+Left arrow
  • End: Ctrl+Alt+Right arrow
  • Del: Alt+Backspace
  • You can likewise grab a screenshot by pressing Ctrl+the Windows key in the top row which normally lets you switch between browser windows.

    Chromebook Forum has a much more particular list of keyboard shortcuts — many of which don’t seem to live documented by Google or Samsung.

    Below the keyboard is a large touchpad without any physical left or birthright buttons. You can exhaust the entire surface to control a mouse cursor, and tap gently on the touchpad to click… sometimes. From time to time, I had to click repeatedly before anything would happen, and some actions only seem to toil if you actually press down on the touchpad until you hear an audible click.

    You can scroll up and down by placing two fingers on the palpate surface and stirring up or down. Two-finger side-to-side scrolling likewise works.

    To emulate a right-click, you exhaust two fingers to tap the touchpad. This lets you bring up context menus to open links in unusual tabs, pin apps to your launcher, or accomplish other actions.

    For the most portion two-finger clicking works reasonably well, but sometimes if both of your fingers don’t hit the touchpad at exactly the selfsame time, you may linger up triggering a left click instead of a right-click — and that can spell open a link in the current browser tab instead of a unusual tab, which can live benevolent of annoying.

    While it took a exiguous while to regain used to the buttonless touchpad, I absorb to Say that now every time I pick up a tablet with dedicated left and birthright buttons, I find myself wanting to space two fingers on the surface to right-click. It’s not a impeccable system, but it makes it much easier to exhaust the touchpad with one hand without stirring your fingers as far.

    The Chromebook instantly recognized a USB mouse when I plugged one in, and had no problem detecting left and birthright click actions from the mouse.

    What a Chromebook can do

    Chrome OS may live exiguous more than a web browser, but there are a few key advantages to the course Google’s operating system works.

    First, operating system updates are incredibly simple. When an update is available, Chrome OS will automatically download it in the background when you’re not paying attention. Eventually you’ll notice a exiguous up arrow in the settings panel indicating that the update is ready.

    The next time you shut down the laptop and spin it back on again, you’ll live running the latest version of Chrome OS. It doesn’t consume significantly longer to reboot after an update than it does to accomplish a timehonored reboot. The one time I noticed an update install on my review unit, the all process took less than 20 seconds.

    The second substantial odds is a case where less is more: because there’s exiguous local storage and almost every app you’ll ever Run on Chrome OS has a web component, you don’t absorb to worry about backing up your device.

    It’s always backed up by default — because your apps, history, settings, and preferences are complete synchronized with Google’s servers. If you lose your Chromebook you can pick up exactly where you left off by grabbing another Chromebook — or by simply logging into a Chrome web browser on a Windows, Mac, or Linux computer.

    The operating system is likewise generally safer from malware. Since you’re not actually installing anything to the local device even when you add an app to the launcher, it’s tough for a malicious hacker to execute anything really dangerous.

    Of course, some folks would call an operating system that stores most of your data on someone else’s server less secure since you absorb no control over it. Personally I reflect Google engineers are probably better prepared to protect my files and information than I am, but they likewise clearly limn a bigger target.

    If you’d rather ply your own data backups and other security measures yourself, Chrome OS probably isn’t for you.

    On the other hand, if you spend most of your time on a computer in a web browser, or if you’re looking for a device with the instant-on qualities of an iPad or Android tablet, but a touchstone keyboard, a Chromebook might live complete you need.

    Since the Samsung progression 5 Chromebook 550 doesn’t Run Windows there are many apps it cannot run. But you’d live surprised just how many web-based alternatives exist.

    Here are a few web of the web apps I exhaust the most, and the desktop apps they replace:

    Aviary likewise has a web app called Myna that you can exhaust to edit audio — with my background as a radio producer I find this intriguing, but I find the thought of uploading uncompressed audio, mixing it, and then downloading it to live a exiguous odd.

    And that’s not counting complete the apps for web-based service that I exhaust regularly including Gmail, Google Reader, Netflix, Facebook, and YouTube.

    That’s not to Say that Chrome OS doesn’t involve any aboriginal apps. There’s a simple file manager which you can exhaust to find and open files on your device or cut, copy, rename, or delete files.

    There’s no course to access the root file system. Basically complete you regain is a Downloads folder, unless you insert an SD card or USB twinkle drive or arduous drive. Then a second drive opens up in the panel on the left, letting you switch between your Downloads folder and external storage.

    Oddly there’s no search role in the file manager, which seems Funny for an operating system designed by the makers of the world’s most favorite search engine.

    Chrome OS likewise includes a basic media player that lets you watch movies and listen to music without an internet connection, a photo viewer and simple image editor, and a document viewer.

    When the Chromebook review unit arrived at my door a few weeks ago, it came with an SD card filled with files to try out. I was amused to learn that I couldn’t open the included Microosft Word, Excel, or PowerPoint documents without an oversight message. But a few days ago Google pushed out a Chrome OS update and now those documents open without a problem, whether the computer is connected to the internet or not.

    Since Chrome OS is basically just a web browser, documents open in a browser window. Videos play in a plenary screen browser window. And a music player pops up in a little browser window that you can minimize when you want to play audio files.

    The image editor built into the operating system is pretty basic, offering you the competence to crop a picture, adjust brightness, or rotate an image. If you requisite any more advanced features you’ll absorb to exhaust a web-based editor such as Aviary.

    I wouldn’t live surprised to notice Google add more functionality to the image editor in the future. The company did buy Aviary competitor Picnik a few years ago. Even though Google shut down Picnik as a standalone service this year, the company clearly has the expertise to build a decent image editing service using nothing but web standards.

    Chrome OS lets you print web pages or other content in two ways. The simplest is to print a page as a PDF. You can then save this for later or copy it to a twinkle drive or email it to yourself to print on another PC.

    Or you can exhaust Google Cloud Print. If you absorb a supported printer connected to the internet, you can forward print jobs directly to that printer from the Chrome web browser. If you don’t absorb a shared printer you can install a Cloud Print app on your PC to spin a printer connected to that computer into a printer that you can exhaust with Chrome OS or Android.

    But to live honest, it’s benevolent of a headache, and I suspect if you’re seriously considering buying a laptop that doesn’t Run aboriginal desktop apps, you might already live the sort of person that doesn’t exhaust a printer very often anyway.

    If you absolutely requisite to Run Windows apps on a Chromebook, Google offers a Chrome Remote Desktop app that lets you remote control any Mac, Linux, or Windows computer that has the Chrome browser installed.

    Of course, that only works if you’re using your Chromebook while your PC is already running… so I benevolent of absorb to sensation why you don’t just walk over to your PC. But I suppose it could arrive in handy if you requisite to login to your toil network to access some files on a PC that you leave running 24/7 for some environmentally unsound reason.

    Although Chrome OS is based on a Linux kernel, at least one considerable website that doesn’t normally play well with Linux works perfectly with Chrome OS. You can stream videos from Netflix even though the website usually only works on computers that can Run Microsoft’s Silverlight plugin.

    What Chrome OS can’t do

    OK, so it turns out an operating system built around a web browser can execute a lot. But there are some things that it can’t execute that could live a exiguous disconcerting for long-time Windows, Mac, or Linux users.

    The most considerable incompatibility between Chrome OS and other operating systems is that a Chromebook becomes about 2000 percent less useful when you disconnect from the internet.

    Chrome OS offline

    Chrome OS offline

    Yes, you can soundless view photos, watch movies, or listen to music stored locally — but Chromebooks only absorb 16GB of storage for local files. You won’t live carrying around your entire video collection on this laptop (unless you absorb a nice collection of very large SD cards).

    Chromebooks are clearly meant to live used with vigorous internet connections. Google and third party developers are taking steps to manufacture them more useful without internet access by structure offline capabilities into a number of apps.

    You can find a few hundred apps with offline features in the Offline Apps collection in the Chrome Web Store. But most web apps soundless don’t toil offline — and many of those that execute are useless unless you absorb the foresight to sync or cache your data before disconnecting from the internet.

    For example, Google Calendar works offline — but only if you sync your calendar before going offline. If you haven’t opened Google Calendar recently or haven’t enabled offline access, opening it while you’re on an airplane will either result in a blank screen or an out-of-date calendar.

    This should depart without saying, but another thing you can’t execute with a Chromebooks is Run apps that aren’t available on the web.

    Want to Run Adobe Photoshop, Microsoft Office, Stata, Final slice Pro, Diablo III, or Portal 2? Tough. There are plenty of online apps that offer similar features — Microsoft even has a web-based version of Office. But if you want to Run those apps specifically, you’re out of luck.

    There’s likewise no support for Microsoft Silverlight, an Adobe twinkle alternative. I don’t notice that as a substantial problem because the only website I’ve ever regularly used that requires Silverlight is Netflix… and that works with Chrome OS anyway. But if you requisite Silverlight, a Chromebook isn’t going to slice it.

    As mentioned above, you can connect a Chromebook wirelessly to a printer using Google Cloud Print, but unless you absorb a supported printer, it’s a bit of a headache to set up.

    Likewise, you can connect an external display. But for some judgement Samsung included a DisplayPort jack instead of a VGA, HDMI, or DVI port. If your monitor doesn’t exhaust DisplayPort (and most older monitors don’t), you’re going to requisite an adapter.

    Performance

    Normally this would live the section where I would Run a progression of benchmarks to test CPU and graphics performance. But my usual set of tests are designed for Windows computers, not Chrome OS.

    Fortunately there are a few browser-based benchmarks which indicate how the Chromebook compares to other devices in terms of JavaScript and HTML5 performance. Of course, the don’t expound the all story, but they execute give us a bit of a basis for comparison.

    The SunSpider benchmark is designed to test JavaScript performance, while Peacekeeper is a test that looks at performance for a number of different HTML5 features including video playback, 2D and 3D gaming, and multitasking.

    I ran each test on three different devices: The progression 5 Chromebook 550 with an Intel Celeron 867 CPU, an HP Pavilion dm1 notebook with an AMD E2-1800 Brazos 2.0 processor, and a Dell Inspiron 537S desktop with an Intel Core 2 Duo E7400 processor — the most powerful PC in my house at the moment.

    As you might expect, the Chromebook was outclassed in the SunSpider test… but it wasn’t that far behind the others. Most of the Android tablets I’ve tested, for instance, absorb scores of 2000 or higher — and lower scores are better in this test.

    Things got even more inviting with the Peacekeeper benchmark — where the Chromebook came out well ahead of the HP Pavilion… but soundless behind the 3-year conventional Dell desktop.

    OK, but these benchmarks test performance under ersatz conditions. What’s it devotion to exhaust a Chromebook on a day to day basis?

    Pretty good.

    Last year’s model may absorb had a netbook processor, but it managed to boot, resume from sleep, and generally Run faster than a typical netbook due to its streamlined operating system.

    But the Intel Atom N570 processor and 2GB of RAM started to indicate their limitations when you tried to stream HD videos over the internet or open more than 5 or 6 browser tabs at a time.

    Those problems absorb disappeared with Samsung’s second Chromebook. I had no problems streaming 1080p HD video from YouTube, HD video from Netflix, or full-screen video from Hulu. And the laptop never slowed down no matter how many browser tabs I had open at once — although to live fair, I don’t reflect I ever really tried more than a dozen or so.

    I reflect Google, Acer, and Samsung were on the birthright track when they released the first Chromebooks with Intel Atom powers… but they missed the notice a bit. You don’t requisite a blazing speedy CPU or an huge amount of RAM to Run Chrome OS effectively.

    But you do requisite something a bit faster than a netbook, and the Chromebook 550 with its Celeron 550 processor and 4GB of RAM delivers.

    VerdictThe Samsung progression 5 Chromebook 550 isn’t for everyone. For $450 or more you can buy a decent Windows laptop, install the Chrome web browser, and execute almost everything that you can execute with a Chromebook.

    But you can execute many of those things better with a Chromebook if the web browser is your most considerable app. The Chromebook 550 boots more quickly than a typical laptop, resumes from sleep nearly instantly, and generally offers the benevolent of responsiveness you’d hope from a cogent Apple or Android tablet, not a notebook.

    You likewise never absorb to worry about updating your operating system, apps, or virus protection software.

    Chromebooks might live a cogent solution for business or enterprise settings where IT managers can hand out a progression of notebooks configured to only Run web apps, allowing users to login to corporate websites to Run specific apps for email, document collaboration, payroll management, or other functions.

    Since Chromebooks retain data backed up online, if you lose or breaks a laptop, the IT department can issue a unusual one and regain you back up and running as soon as you enter your user ID and password.

    As a consumer product, it would live easier to recommend a computer devotion a Chromebook which does less than a typical laptop if it cost less. But you can buy an HP Pavilion dm1 Windows 7 notebook with similar features for less money.

    But in some ways, less is more, and if you’re sold on the web app-driven future, a Chromebook could manufacture a decent substitute for (or compliment to) a traditional laptop.



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