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000-674 exam Dumps Source : xSeries - Windows 2000 Installation/Performance Optimization

Test Code : 000-674
Test designation : xSeries - Windows 2000 Installation/Performance Optimization
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: 68 actual Questions

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IBM IBM xSeries - Windows

Lenovo’s first ThinkPads with Intel Whiskey Lake processors to arrive this month | killexams.com actual Questions and Pass4sure dumps

lenovo introduces first thinkpads with whiskey lake cpus dsc 6860

Lenovo has opted now not to stay up for CES 2019 subsequent month to interpolate the primary ThinkPads with Intel’s Whiskey Lake Core I5-8265U and Core i7-8565U processors. they are going to arrive onboard the brand fresh ThinkPad L390 and L390 Yoga, fresh business-focused instruments that are set to become purchasable later in December, with expenditures birth at $659 and $889, respectively.

pretty unchanged on the outdoor from ultimate 12 months’s L380, the fresh ThinkPads each characteristic 13.three-inch FHD touch displays and approach in black and silver colour alternate options. The L390 Yoga remains the more top rate of both models, and at $889 comes with points affection a garaged energetic Pen and a world-dealing with webcam. each of the gadgets pack alternatives for as much as 32 GB DDR4 RAM, a 512GB SSD, and a latest alternative of ports. these embrace two USB class C ports, two USB 3.1 ports, an HDMI port, micro SD Card reader, and Mini RJ-45 jack.

Lenovo is promising as much as 14 hours of battery on the ThinkPad L390, and 12 hours on the L390 Yoga. in terms of weight, the L390 starts at three.2 kilos, and the L390 Yoga at three.5 pounds.  Some protection aspects are additionally included, with alternatives for a fingerprint reader and windows whats up IR camera. other advancements for the fresh instruments encompass Intel’s 9560 Wi-Fi module and serve for Bluetooth 5.0.

even though these are the first ThinkPads with Whiskey Lake processors, Lenovo is still together with configuration alternate options for Intel Celeron processors, in keeping with Toms Hardware. That makes the contraptions versatile for consumers attempting to find some thing with added quad-core processing power, or just a expense range-friendly computing device.

“placed with price-sensitive trade purchasers and professional consumers in intellect, the L collection maintains the ThinkPad recognition for ruggedness and sturdiness. Sitting below their ThinkPad X1 top class laptops and the mainstream corporate workhorse T and X sequence, the up to date L390 and L390 are designed to provide end-clients with mainstream efficiency and price,” talked about Lenovo.

A start to Whiskey Lake is wonderful for ThinkPad fanatics, however there may well breathe larger information on the horizon at CES 2019. A previous leak of a Lenovo information sheet for the IdeaPad S530 indicated that Intel’s ninth-technology computing device processors can breathe coming soon.

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Lenovo Debuts First ThinkPads with newest 8th-Gen Processors | killexams.com actual Questions and Pass4sure dumps

Lenovo is updating its expense sweep trade computer line with the newest Intel processors. The enterprise published the ThinkPad L390 and ThinkPad L390 Yoga today, just a few weeks in strengthen of the buyer Electronics note (CES), the Place companies will note off their gadgets for the fresh yr.

Lenovo ThinkPad L390 Clamshell

the fresh models might breathe purchasable in silver and black once they launch later this month. The L390 will birth at $659 whereas the groundwork mannequin of the L390 Yoga will roam for $889. Lenovo will bundle a garaged lively Pen stylus with the Yoga for taking notes and drawing in pill mode.

once they develop into accessible, the duo can breathe the first ThinkPads armed with the newest 8th Gen Intel Whiskey Lake processors. These fresh chips should still provide the L390 and L390 Yoga an efficient performance boost over their predecessors, the ThinkPad L380 and L380 Yoga.

each contraptions will approach with an FHD (1080p) reveal and may breathe configured with as much as 32GB of RAM and a 512GB SSD. pics are confined to built-in Intel HD snap shots on the L390 and Intel UHD 620 GPU on the convertible mannequin.

Following the case of their predecessors, the ThinkPad L390 and L390 Yoga are slimmer and lighter than most company laptops. At 0.7 inches and three.2 kilos, the clamshell L390 is a hair slimmer than eventual yr's L380. The 3.5-pound and nil.7-inch thick Yoga L390 is similarly transportable, however its bendy design adds a exiguous bit of weight.

Lenovo costs the battery lifetime of the ThinkPad L390 at 14 hours, whereas the contact monitor convertible is expected to eventual 12 hours on a charge. they will procure a stronger theory of real-world runtime once they carry these machines into their lab.

placed beneath the T-sequence and X-collection in Lenovo's trade laptop tier, L-sequence laptops are geared toward trade authorities who requisite commercial enterprise aspects at a reasonable price. To that conclusion, the Mil-Spec confirmed L390 and L390 Yoga feature IR cameras for home windows howdy facial focus login, fingerprint sensors, dTPM 2.0 chips, and a Kensington lock. You additionally procure a titanic sweep of connections you'd are expecting from an trade computing device, together with two USB-C ports, two USB 3.1 ports, an HDMI, a microSD card and Lenovo's mini Ethernet input.

We hope to perceive greater from Lenovo and other computing device makers when CES kicks off on January 8 in Las Vegas.


evaluate: Lenovo ThinkPad X1 severe | killexams.com actual Questions and Pass4sure dumps

Lenovo is again with a further X-collection computer, the ThinkPad X1 excessive. This model joins the X1 Carbon and X1 Yoga, bringing the equal regular design aesthetic alongside the vow of managing disturbing computing initiatives “without a hitch.” The extreme mannequin is designed for clients with extreme wants — both in terms of portability and efficiency. How neatly does it meet those needs?

Hardware

The ThinkPad X1 extreme is impressively small and light for a notebook, giving it an instantaneous appeal over its clunky, hefty opponents. The laptop activities Lenovo’s no-nonsense ThinkPad enterprise design, together with a light black color and embossed ThinkPad emblem on the lid. both the lid and inner palm relaxation are smooth to the touch.

The extreme’s keyboard activities the expected ThinkPad design; it has retained the pink TrackPoint “nub” and widespread three-button trackpad, and the keys are both extensive and circular. The quit result is a extremely comfy, uncommunicative keyboard that can conveniently accommodate giant arms.

The vehement facets an attractive 15.6-inch reveal obtainable in plenary HD and 4K touch (our unit). patrons who want the most advantageous monitor feasible should roam with the 4K alternative, which supports Dolby vision HDR and a a hundred-% colour gamut alongside better distinction, brightness, and aspect.

other design facets of note encompass thin bezels across the reveal, as well as a bent to opt for up fingerprints that don’t readily buff out. The energy button is round and prominently displayed on the palm relaxation’s commandeer edge; a few inches beneath it lies a small rectangular fingerprint reader. becoming a member of that fingerprint reader is an non-compulsory IR digital camera for windows whats up and a privacy slider on the webcam.

TECH SPECS

Processor: up to eighth technology Intel Core i7-8850H 6 Core Processor with vPro (2.60GHz, up to four.30GHz with turbo increase know-how, 9MB Cache)working system:– home windows 10 home– windows 10 seasoned – Lenovo recommends home windows 10 ProDisplay:– 15.6″ FHD (1920 x 1080) IPS anti-glare, 300nits, 72% colour gamut– 15.6″ 4K UHD HDR (3840 x 2160) IPS multi-touch, anti-reflective / anti-smudge, 400 nits, one hundred% Adobe 8+2 color depth with Dolby imaginative and prescient– supports up to four independent monitorsGraphics: NVIDIA GeForce GTX 1050 Ti four GBMemory: up to 64 GB DDR4 2666 MHz, dual DIMMStorage: as much as 1 TB PCIe SSDBattery: as much as 15hr, four cellphone, 80 Wh, with speedy can impregnate technologyConnectivity:– Intel dual corps 9560 wireless AC (2 x 2) with vPro™ + Bluetooth® 5.0– Intel dual corps 9560 wireless AC (2 x 2) + Bluetooth® 5.0Camera:– 720p HD with ThinkShutter privacy cover– Infrared (IR) camera (non-compulsory; required for expend with home windows hiya & doesn’t encompass ThinkShutter)safety– speedy on-line identity (FIDO) authentication capabilities– dTPM 2.0– fit-on-Chip touch fingerprint reader– windows hi there with facial attention application (requires IR camera)– ThinkShutter on 720p HD camera– wise Card Reader (non-compulsory)– Kensington® lock slotAudio:– Dolby Audio™ top rate– Dolby Atmos® for headset*– Noise-cancelling twin-array some distance bailiwick microphonesWeight starting at:– FHD non-touch: starting at three.seventy six lbs (1.7 kg)– 4K Touchscreen: birth at 4.06 lbs (1.8 kg)Dimensions (W x D x H)FHD non-touch: 14.24” x 9.67” x .72” / 361.eight x 245.7 x 18.4 (mm)4K Touchscreen: 14.24” x 9.67” x .74” / 361.8 x 245.7 x 18.7 (mm)Keyboard:– Spill resistant– Multitouch glass touchpad– Backlit with white LED lightingPorts:– 2 x USB three.1 (Gen 1, 1 always on)– 2 x USB-C Thunderbolt™ 3– four-in-1 SD card reader– HDMI 2.0– community extension– Combo audio / micAC Adapter: 135WSupported Docking: ThinkPad Thunderbolt computer Dock

software & efficiency

Lenovo offers the ThinkPad X1 extreme with both windows 10 home and home windows 10 seasoned alternatives. efficiency is outstanding throughout complete classes; the rig responds rapidly to every thing from birth applications to tabbing through browser windows and streaming content material. hefty use, similar to batch resizing and watermarking photos or modifying a video, consequences within the fan kicking on and, quickly enough, the bottom getting too warm to comfortably maintain it up one’s lap.

things they like

Given the extreme’s “pc” designation, it’s no surprise that Lenovo packed in usher for up to 4 standalone 4K monitors. this is a welcomed addition that makes it possible to acquire expend of the laptop as a piece of an in depth computer setup with out settling for massive workaround options.

Lenovo took this a step additional and offers an not obligatory infrared camera that aspects Mirametrix perceive know-how. With this, the rig tracks the person’s face, eye, and gape to automatically adjust utility home windows and cursors, improving productivity across numerous displays.

Likewise, Lenovo didn’t skimp on ports with the severe. clients savor direct entry to a pair of Thunderbolt 3 ports, as well as two USB three.1 ports, an SD card reader, HDMI, and network extension port. An not obligatory dock is attainable for users with more disturbing wants, but on-the-go gurus will ascertain the laptop’s a variety of port alternate options are greater than satisfactory for many wants.

issues

unbelievable a stability between efficiency and battery actuality is never effortless, and workstations in selected undergo from hefty accent on one at the expense of the different. It wouldn’t breathe reasonable to pretense that the 4K edition of the severe has impoverished battery existence, because it doesn’t, but clients should humor their expectations, chiefly if they’re maxing out the monitor brightness and holding a perpetually lofty load on the system.

still, battery actuality became quite missing compared to some competing models, accomplishing a few hours with brightness became up, videos streaming, and customary trade multi-tasking underway. Lenovo presents a compromise in the type of speedy charging — patrons savor entry to speedy can impregnate for getting the battery to eighty% in 60 minutes.

an additional expertise downside is a combination of warmth and loud fan babel complete over hefty use.

Wrap-up

The Lenovo ThinkPad X1 severe is one of the most fascinating mobile workstations I’ve used in a long time. The desktop’s slim, lightweight design coupled with a gorgeous 4K reveal and lofty efficiency acquire this mannequin a treat for anyone making an attempt to procure serious work accomplished whereas far from the workplace. Battery life isn’t fairly as stellar as some may likewise hope, however the rig can nonetheless present a number of hours on a impregnate and, due to quick charging, topping up the battery doesn’t recall long in any respect.

professionals trying to find a very competent moveable computer savor a brilliant preference in the ThinkPad X1 intense. accessible from Lenovo now starting at $1,301 USD.


000-674 xSeries - Windows 2000 Installation/Performance Optimization

Study usher Prepared by Killexams.com IBM Dumps Experts


Killexams.com 000-674 Dumps and actual Questions

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000-674 exam Dumps Source : xSeries - Windows 2000 Installation/Performance Optimization

Test Code : 000-674
Test designation : xSeries - Windows 2000 Installation/Performance Optimization
Vendor designation : IBM
: 68 actual Questions

Real 000-674 exam Questions to Pass at first attempt.
To procure fulfillment in 000-674 exam. humans trust that a student ought to own sharp thoughts. even though it is True however it isnt totally actual due to the fact that along with the pupil, the coach or the instructor savor to likewise breathe properly qualified and knowledgeable. I feel blessed that i was acquainted with this Killexams.com wherein I met such incredible educators who taught me a way to transparent my 000-674 test and were given me via them with a breeze. I thank them with the lowest of my coronary heart.


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xSeries - Windows 2000 Installation/Performance Optimization

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King of the network operating systems | killexams.com actual questions and Pass4sure dumps

COMPUTINGFrom...Network World Fusion networking

January 24, 2000Web posted at: 12:11 p.m. EST (1711 GMT)

by John Bass and James Robinson, Network World Test Alliance

(IDG) -- It complete boils down to what you're looking for in a network operating system (NOS).

Do you want it lean and resilient so you can install it any way you please? Perhaps administration bells and management whistles are what you requisite so you can deploy several hundred servers. Or maybe you want an operating system that's robust enough so that you sleep affection a baby at night?

The helpful news is that there is a NOS waiting just for you. After the rash of recent software revisions, they took an in-depth perceive at four of the major NOSes on the market: Microsoft's Windows 2000 Advanced Server, Novell's NetWare 5.1, Red Hat Software's Linux 6.1 and The Santa Cruz Operation's (SCO) UnixWare 7.1.1. Sun declined their invitation to submit Solaris because the company says it's working on a fresh version.

Microsoft's Windows 2000 edges out NetWare for the Network World Blue Ribbon Award. Windows 2000 tops the bailiwick with its management interface, server monitoring tools, storage management facilities and security measures.

However, if it's performance you're after, no product came immediate to Novell's NetWare 5.1's numbers in their exhaustive file service and network benchmarks. With its lightning-fast engine and Novell's directory-based administration, NetWare offers a considerable groundwork for an enterprise network.

We organize the latest release of Red Hat's commercial Linux bundle led the list for flexibility because its modular design lets you pare down the operating system to suit the task at hand. Additionally, you can create scripts out of multiple Linux commands to automate tasks across a distributed environment.

While SCO's UnixWare seemed to lag behind the pack in terms of file service performance and NOS-based administration features, its scalability features acquire it a strong candidate for running enterprise applications.

The numbers are in

Regardless of the job you saddle your server with, it has to fulfill well at reading and writing files and sending them across the network. They designed two benchmark suites to measure each NOS in these two categories. To reflect the actual world, their benchmark tests deem a wide sweep of server conditions.

NetWare was the hands-down leader in their performance benchmarking, taking first Place in two-thirds of the file tests and earning top billing in the network tests.

Red Hat Linux followed NetWare in file performance overall and even outpaced the leader in file tests where the read/write loads were small. However, Linux did not fulfill well handling big loads - those tests in which there were more than 100 users. Under heavier user loads, Linux had a tendency to stop servicing file requests for a short epoch and then start up again.

Windows 2000 demonstrated impoverished write performance across complete their file tests. In fact, they organize that its write performance was about 10% of its read performance. After consulting with both Microsoft and Client/Server Solutions, the author of the Benchmark Factory testing tool they used, they determined that the impoverished write performance could breathe due to two factors. One, which they were unable to verify, might breathe a possible performance problem with the SCSI driver for the hardware they used.

More significant, though, was an issue with their test software. Benchmark Factory sends a write-through flag in each of its write requests that is supposed to antecedent the server to update cache, if appropriate, and then obligate a write to disk. When the write to disk occurs, the write convoke is released and the next request can breathe sent.

At first glance, it appeared as if Windows 2000 was the only operating system to homage this write-through flag because its write performance was so poor. Therefore, they ran a second round of write tests with the flag turned off.

With the flag turned off, NetWare's write performance increased by 30%. This test proved that Novell does indeed homage the write-through flag and will write to disk for each write request when that flag is set. But when the write-through flag is disabled, NetWare writes to disk in a more efficient manner by batching together contiguous blocks of data on the cache and writing complete those blocks to disk at once.

Likewise, Red Hat Linux's performance increased by 10% to 15% when the write-through flag was turned off. When they examined the Samba file system code, they organize that it too honors the write-through flag. The Samba code then finds an optimum time during the read/write sequence to write to disk.

This second round of file testing proves that Windows 2000 is dependent on its file system cache to optimize write performance. The results of the testing with the write-through flag off were much higher - as much as 20 times faster. However, Windows 2000 still fell behind both NetWare and RedHat Linux in the file write tests when the write-through flag was off.

SCO honors the write-through flag by default, since its journaling file system is constructed to maximize data integrity by writing to disk for complete write requests. The results in the write tests with the write-through flag on were very similar to the test results with the write-through flag turned off.

For the network benchmark, they developed two tests. Their long TCP transaction test measured the bandwidth each server can sustain, while their short TCP transaction test measured each server's talent to ply big numbers of network sessions with small file transactions.

Despite a impoverished showing in the file benchmark, Windows 2000 came out on top in the long TCP transaction test. Windows 2000 is the only NOS with a multithreaded IP stack, which allows it to ply network requests with multiple processors. Novell and Red Hat declare they are working on integrating this capability into their products.

NetWare and Linux likewise registered strong long TCP test results, coming in second and third, respectively.

In the short TCP transaction test, NetWare came out the transparent winner. Linux earned second Place in spite of its want of support for abortive TCP closes, a way by which an operating system can quickly tear down TCP connections. Their testing software, Ganymede Software's Chariot, uses abortive closes in its TCP tests.

Moving into management

As enterprise networks grow to require more servers and support more quit users, NOS management tools become crucial elements in keeping networks under control. They looked at the management interfaces of each product and drilled down into how each handled server monitoring, client administration, file and print management, and storage management.

We organize Windows 2000 and NetWare provide equally useful management interfaces.

Microsoft Management Console (MMC) is the glue that holds most of the Windows 2000 management functionality together. This configurable graphical user interface (GUI) lets you snap in Microsoft and third-party applets that customize its functionality. It's a two-paned interface, much affection Windows Explorer, with a nested list on the left and selection details on the right. The console is light to expend and lets you configure many local server elements, including users, disks, and system settings such as time and date.

MMC likewise lets you implement management policies for groups of users and computers using lively Directory, Microsoft's fresh directory service. From the lively Directory management tool inside MMC, you can configure users and change policies.

The network configuration tools are organize in a separate application that opens when you click on the Network Places icon on the desktop. Each network interface is listed inside this window. You can add and change protocols and configure, enable and disable interfaces from here without rebooting.

NetWare offers several interfaces for server configuration and management. These tools offer duplicate functionality, but each is useful depending from where you are trying to manage the system. The System Console offers a number of tools for server configuration. One of the most useful is NWConfig, which lets you change start-up files, install system modules and configure the storage subsystem. NWConfig is simple, intuitive and predictable.

ConsoleOne is a Java-based interface with a few graphical tools for managing and configuring NetWare. Third-party administration tools can plug into ConsoleOne and let you manage multiple services. They reflect ConsoleOne's interface is a bit unsophisticated, but it works well enough for those who must savor a Windows- based manager.

Novell likewise offers a Web-accessible management application called NetWare Management Portal, which lets you manage NetWare servers remotely from a browser, and NWAdmin32, a relatively simple client-side tool for administering Novell Directory Services (NDS) from a Windows 95, 98 or NT client.

Red Hat's overall systems management interface is called LinuxConf and can race as a graphical or text-based application. The graphical interface, which resembles that of MMC, works well but has some layout issues that acquire it difficult to expend at times. For example, when you race a setup application that takes up a lot of the screen, the system resizes the application larger than the desktop size.

Still, you can manage pretty much anything on the server from LinuxConf, and you can expend it locally or remotely over the Web or via telnet. You can configure system parameters such as network addresses; file system settings and user accounts; and set up add-on services such as Samba - which is a service that lets Windows clients procure to files residing on a Linux server - and FTP and Web servers. You can apply changes without rebooting the system.

Overall, Red Hat's interface is useful and the underlying tools are powerful and flexible, but LinuxConf lacks the polish of the other vendors' tools.

SCO Admin is a GUI-based front quit for about 50 SCO UnixWare configuration and management tools in one window. When you click on a tool, it brings up the application to manage that detail in a separate window.

Some of SCO's tools are GUI-based while others are text-based. The server required a reboot to apply many of the changes. On the plus side, you can manage multiple UnixWare servers from SCOAdmin.

SCO likewise offers a useful Java-based remote administration tool called WebTop that works from your browser.

An eye on the servers and clients

One well-known administration task is monitoring the server itself. Microsoft leads the pack in how well you can maintain an eye on your server's internals.

The Windows 2000 System Monitor lets you view a real-time, running graph of system operations, such as CPU and network utilization, and recollection and disk usage. They used these tools extensively to determine the consequence of their benchmark tests on the operating system. Another tool called Network Monitor has a basic network packet analyzer that lets you descry the types of packets coming into the server. Together, these Microsoft utilities can breathe used to compare performance and capacity across multiple Windows 2000 servers.

NetWare's Monitor utility displays processor utilization, recollection usage and buffer utilization on a local server. If you know what to perceive for, it can breathe a powerful tool for diagnosing bottlenecks in the system. Learning the sense of each of the monitored parameters is a bit of a challenge, though.

If you want to perceive at performance statistics across multiple servers, you can tap into Novell's Web Management Portal.

Red Hat offers the standard Linux command-line tools for monitoring the server, such as iostat and vmstat. It has no graphical monitoring tools.

As with any Unix operating system, you can write scripts to automate these tools across Linux servers. However, these tools are typically cryptic and require a lofty smooth of proficiency to expend effectively. A suite of graphical monitoring tools would breathe a considerable addition to Red Hat's Linux distribution.

UnixWare likewise offers a number of monitoring tools. System Monitor is UnixWare's simple but limited GUI for monitoring processor and recollection utilization. The sar and rtpm command-line tools together list real-time system utilization of buffer, CPUs and disks. Together, these tools give you a helpful overall opinion of the load on the server.

Client administration

Along with managing the server, you must manage its users. It's no surprise that the two NOSes that ship with an integrated directory service topped the bailiwick in client administration tools.

We were able to configure user permissions via Microsoft's lively Directory and the directory administration tool in MMC. You can group users and computers into organizational units and apply policies to them.

You can manage Novell's NDS and NetWare clients with ConsoleOne, NWAdmin or NetWare Management Portal. Each can create users, manage file space, and set permissions and rights. Additionally, NetWare ships with a five-user version of Novell's ZENworks tool, which offers desktop administration services such as hardware and software inventory, software distribution and remote control services.

Red Hat Linux doesn't offer much in the way of client administration features. You must control local users through Unix license configuration mechanisms.

UnixWare is similar to Red Hat Linux in terms of client administration, but SCO provides some Windows binaries on the server to remotely set file and directory permissions from a Windows client, as well as create and change users and their settings. SCO and Red Hat offer support for the Unix-based Network Information Service (NIS). NIS is a store for network information affection logon names, passwords and home directories. This integration helps with client administration.

Handling the staples: File and print

A NOS is nothing without the talent to share file storage and printers. Novell and Microsoft collected top honors in these areas.

You can easily add and maintain printers in Windows 2000 using the print administration wizard, and you can add file shares using lively Directory management tools. Windows 2000 likewise offers Distributed File Services, which let you combine files on more than one server into a single share.

Novell Distributed Print Services (NDPS) let you quickly incorporate printers into the network. When NDPS senses a fresh printer on the network, it defines a Printer Agent that runs on the printer and communicates with NDS. You then expend NDS to define the policies for the fresh printer.

You define NetWare file services by creating and then mounting a disk volume, which likewise manages volume policies.

Red Hat includes Linux's printtool utility for setting up server-connected and networks printers. You can likewise expend this GUI to create printcap entries to define printer access.

Linux has a set of command-line file system configuration tools for mounting and unmounting partitions. Samba ships with the product and provides some integration for Windows clients. You can configure Samba only through a cryptic configuration ASCII file - a serious drawback.

UnixWare provides a resilient GUI-based printer setup tool called Printer SetUp Manager. For file and volume management, SCO offers a tool called VisionFS for interoperability with Windows clients. They used VisionFS to allow their NT clients to access the UnixWare server. This service was light to configure and use.

Storage management

Windows 2000 provides the best tools for storage management. Its graphical Manage Disks tool for local disk configuration includes software RAID management; you can dynamically add disks to a volume set without having to reboot the system. Additionally, a signature is written to each of the disks in an array so that they can breathe moved to another 2000 server without having to configure the volume on the fresh server. The fresh server recognizes the drives as members of a RAID set and adds the volume to the file system dynamically.

NetWare's volume management tool, NWConfig, is light to use, but it can breathe a exiguous confusing to set up a RAID volume. Once they knew what they were doing, they had no problems formatting drives and creating a RAID volume. The tool looks a exiguous primitive, but they give it lofty marks for functionality and ease of use.

Red Hat Linux offers no graphical RAID configuration tools, but its command line tools made RAID configuration easy.

To configure disks on the UnixWare server, they used the Veritas Volume Manager graphical disk and volume administration tool that ships with UnixWare. They had some problems initially getting the tool to recognize the drives so they could breathe formatted. They managed to work around the disk configuration problem using an assortment of command line tools, after which Volume Manager worked well.

Security

While they did not probe these NOSes extensively to expose any security weaknesses, they did perceive at what they offered in security features.

Microsoft has made significant strides with Windows 2000 security. Windows 2000 supports Kerberos public key certificates as its primary authentication mechanism within a domain, and allows additional authentication with smart cards. Microsoft provides a Security Configuration Tool that integrates with MMC for light management of security objects in the lively Directory Services system, and a fresh Encrypting File System that lets you designate volumes on which files are automatically stored using encryption.

Novell added support for a public-key infrastructure into NetWare 5 using a public certificate schema developed by RSA Security that lets you tap into NDS to generate certificates.

Red Hat offers a basic Kerberos authentication mechanism. With Red Hat Linux, as with most Unix operating systems, the network services can breathe individually controlled to increase security. Red Hat offers Pluggable Authentication Modules as a way of allowing you to set authentication policies across programs running on the server. Passwords are protected with a shadow file. Red Hat likewise bundles firewall and VPN services.

UnixWare has a set of security tools called Security Manager that lets you set up varying degrees of intrusion protection across your network services, from no restriction to turning complete network services off. It's a helpful management time saver, though you could manually modify the services to achieve the same result.

Stability and foible tolerance

The most feature-rich NOS is of exiguous value if it can't maintain a server up and running. Windows 2000 offers software RAID 0, 1 and 5 configurations to provide foible tolerance for onboard disk drives, and has a built-in network load-balancing feature that allows a group of servers to perceive affection one server and share the same network designation and IP address. The group decides which server will service each request. This not only distributes the network load across several servers, it likewise provides foible tolerance in case a server goes down. On a lesser scale, you can expend Microsoft's Failover Clustering to provide basic failover services between two servers.

As with NT 4.0, Windows 2000 provides recollection protection, which means that each process runs in its own segment.

There are likewise backup and restore capabilities bundled with Windows 2000.

Novell has an add-on product for NetWare called Novell Cluster Services that allows you to cluster as many as eight servers, complete managed from one location using ConsoleOne, NetWare Management Portal or NWAdmin32. But Novell presently offers no clustering products to provide load balancing for applications or file services. NetWare has an elaborate recollection protection scheme to segregate the recollection used for the kernel and applications, and a Storage Management Services module to provide a highly resilient backup and restore facility. Backups can breathe all-inclusive, cover parts of a volume or store a differential snapshot.

Red Hat provides a load-balancing product called piranha with its Linux. This package provides TCP load balancing between servers in a cluster. There is no arduous confine to the number of servers you can configure in a cluster. Red Hat Linux likewise provides software RAID support through command line tools, has recollection protection capabilities and provides a rudimentary backup facility.

SCO provides an optional feature to cluster several servers in a load-balancing environment with Non-Stop Clustering for a lofty smooth of fault-tolerance. Currently, Non-Stop Clustering supports six servers in a cluster. UnixWare provides software RAID support that is managed using SCO's On-Line Data Manager feature. complete the standard RAID levels are supported. Computer Associates' bundled ArcServeIT 6.6 provides backup and restore capabilities. UnixWare has recollection protection capabilities.

Documentation

Because their testing was conducted before Windows 2000's generic availability ship date, they were not able to evaluate its hard-copy documentation. The online documentation provided on a CD is extensive, useful and well-organized, although a Web interface would breathe much easier to expend if it gave more than a pair of sentences at a time for a particular serve topic.

NetWare 5 comes with two manuals: a minute manual for installing and configuring the NOS with helpful explanations of concepts and features along with an overview of how to configure them, and a small spiral-bound booklet of quick start cards. Novell's online documentation is very helpful.

Red Hat Linux comes with three manuals - an installation guide, a getting started usher and a reference manual - complete of which are light to follow.

Despite being the most difficult product to install, UnixWare offers the best documentation. It comes with two manuals: a system handbook and a getting started guide. The system handbook is a reference for conducting the installation of the operating system. It does a helpful job of reflecting this painful experience. The getting started usher is well-written and well-organized. It covers many of the tools needed to configure and maintain the operating system. SCO's online documentation looks nice and is light to follow.

Wrapping up

The bottom line is that these NOSes offer a wide sweep of characteristics and provide enterprise customers with a considerable deal of preference regarding how each can breathe used in any given corporate network.

If you want a good, generic purpose NOS that can deliver enterprise-class services with complete the bells and whistles imaginable, then Windows 2000 is the strongest contender. However, for lofty performance, enterprise file and print services, their tests note that Novell leads the pack. If you're willing to pay a higher expense for scalability and reliability, SCO UnixWare would breathe a safe bet. But if you requisite an inexpensive alternative that will give you bare-bones network services with decent performance, Red Hat Linux can certainly fitting the bill.

The preference is yours.

Bass is the technical director and Robinson is a senior technical staff member at Centennial Networking Labs (CNL) at North Carolina State University in Raleigh. CNL focuses on performance, capacity and features of networking and server technologies and equipment.

RELATED STORIES:

Debate will focus on Linux vs. LinuxJanuary 20, 2000Some Windows 2000 PCs will jump the gunJanuary 19, 2000IBM throws Linux lovefestJanuary 19, 2000Corel Linux will race Windows appsJanuary 10, 2000Novell's eDirectory spans platformsNovember 16, 1999New NetWare embraces Web appsNovember 2, 1999Microsoft sets a date for Windows 2000October 28, 1999

RELATED IDG.net STORIES:

Fusion's Forum: Square off with the vendors over who has the best NOS(Network World Fusion)How they did it: Details of the testing(Network World Fusion)Find out the tuning parameters(Network World Fusion)Download the Config files(Network World Fusion)The Shootout results(Network World Fusion)Fusion's NOS resources(Network World Fusion)With Windows 2000, NT grows up(Network World Fusion)Fireworks expected at NOS showdown(Network World Fusion)

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Optimize your server's disk performance | killexams.com actual questions and Pass4sure dumps

Hard disks are the resources most heavily used by a server. The way a server's arduous disks are configured and maintained usually has an tremendous impact on the server's overall performance.

As such, it makes sense to spend a bit of time optimizing a server's disk usage. In this article, I'll share some techniques for improving the efficiency of your server's disk subsystem.

Note: Every server is configured differently. As such, disk configuration and optimization techniques that would breathe ideally suited to one organization might breathe detrimental to another. The only way to fully optimize a server's disk usage is to anatomize which applications are running on the server, and how much of a workload those applications Place on the server's disk subsystem.

Therefore, there is no one technique that will acquire your server race with peak performance. This article will provide you with some generic techniques that will ameliorate the performance of most types of servers.

File placement

One trick for optimizing a server's performance is to Place files onto the commandeer arduous drives. For example, the Windows Server operating system is almost always installed on the C drive. That being the case, I recommend using the C drive only for the operating system, although in some cases you can likewise install applications to the C drive without hurting performance much.

The OS component that consumes the most disk I/O time is the pagefile. I recommend placing the pagefile on a dedicated arduous drive (not a dedicated partition). This prevents disk I/O related to virtual recollection paging from disrupting other parts of the system.

Any data stored on a server should breathe stored on a dedicated volume. Since most of the server's disk I/O is usually related to reading and writing data, it usually makes sense to Place the data on a RAID array. Which type of RAID depends on the smooth of performance and foible tolerance you need. RAID 10 arrays are a helpful preference because they're as speedy as a RAID 1 array, but offer foible tolerance through mirroring.

Memory

The amount of recollection in your system makes a huge disagreement in disk subsystem performance. As mentioned above, placing the pagefile on a dedicated arduous disk minimizes the impact that virtual recollection paging has on the relaxation of the system.

The concept of virtual recollection comes from a time when physical recollection was extremely expensive. The opinion was to compensate for a shortage of physical recollection by allowing a portion of the arduous disk to act as physical memory.

However, this technique is inefficient. For one thing, the arduous disk is much slower than even the slowest physical memory. arduous disk access is measured in milliseconds; physical recollection access is measured in nanoseconds.

Another problem is that the OS cannot work with pages of recollection stored in virtual memory. If the OS needs to fulfill an action on a page of memory, that page must breathe moved to physical recollection first. This process is called swapping or paging.

If a server's physical recollection is full, and it needs to access a page of recollection stored in virtual memory, the server will savor to roam a currently unused page from physical recollection to virtual memory, in order to acquire play for a page to breathe moved from virtual recollection to physical memory.

This paging process consumes not only disk resources but likewise a lot of CPU time and memory. Some of the server's physical recollection is used to maintain track of which pages are in RAM and which are in virtual memory. This is why the paging process is so inefficient. Some paging is normal, but extravagant paging can lead to constant disk activity and murder a server's performance.

The best way to reduce paging is to install as much recollection as possible in your server. As the amount of RAM in your server increases, the size of the pagefile will likewise increase. However, the system's dependency on the pagefile decreases. This will free up a considerable amount of disk time and CPU time.

Defragmenting

One way to maintain arduous disks performing well is to schedule a routine defragmentation. arduous disks are designed to write data in a linear fashion. But when files are deleted, gaps of void space are left behind.

A arduous disk will fill in this void space before writing data to the void space at the quit of the drive. If a gap of void space is not big enough to accommodate a file that's being written, the file is fragmented. This means that a portion of the file is inserted into the gap of void space, and the relaxation of the file is placed either in the next gap of void space or at the quit of the drive. . .whichever comes first.

Fragmentation is infamous for system performance, because the disks heads requisite to roam complete over the surface of the arduous disk to read or write files. Defragmenting a arduous disk removes fragmentation and allows files to breathe stored in a linear fashion, which allows for much faster reads and writes.

Indexing

Depending on what your server is being used for, indexing can breathe helpful or a bad. Indexing involves reading complete the files on a disk and edifice an index that tells the OS what each file contains. If users are routinely searching through big quantities of data looking for specific files, indexing can acquire this process dramatically more efficient.

However, many administrators finish not affection indexing because the process consumes a lot of CPU time and memory. Some disk space is likewise used to store the index.

Here's my recommendation: conclude whether indexing is commandeer on a server-by-server basis. I index the file servers in my organization because I constantly savor to search through my files to descry if I've ever written about inevitable topics. However, my mail servers, database servers, DNS servers, domain controllers, etc., are not indexed. Indexing these types of servers would breathe pointless. In fact, if you want to ameliorate performance, you might check your infrastructure servers to acquire sure they're not indexed.

About the author: Brien M. Posey, MCSE, is a Microsoft Most Valuable Professional for his work with Windows 2000 Server, Exchange Server and IIS. He previously served as CIO for a nationwide chain of hospitals and was in impregnate of IT security for Fort Knox. He writes regularly for SearchWinComputing.com and other TechTarget sites.

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Windows Server 2008 R2 Benefits for Administration | killexams.com actual questions and Pass4sure dumps

This chapter is from the bespeak 

Windows Server 2008 R2 provides several fresh benefits that serve organizations better administer their networking environment. These fresh features provide better file and data management, better performance monitoring and reliability tracking tools to identify system problems and proactively address issues, a fresh image deployment tool, and a whole fresh set of Group Policy Objects that serve administrators better manage users, computers, and other lively Directory objects.

Improvements in the Group Policy Management

Windows Server 2008 R2 introduces over 1,000 fresh Group Policy Objects specific to Windows Server 2008 R2 and Windows 7, along with several fresh components that expand on the core capabilities of Group Policy management that savor been piece of Windows 2000/2003 lively Directory. The basic functions of Group Policy haven't changed, so the Group Policy protest Editor (gpedit) and the Group Policy Management Console (GPMC) are the same, but with more options and settings available.

As mentioned earlier, the Group Policy Management Console can either breathe race as a separate MMC tool, or it can breathe launched off the Features fork of the Server Manager console tree, as shown in device 1.7. Group policies in Windows Server 2008 R2 provide more granular management of local machines, specifically having policies that push down to a client that are different for administrator and non-administrator users.

Additionally, applications can now query or register with a network location awareness service within Group Policy management, which provides the identity where a user or computer protest resides. As an example, a policy can breathe written that allows users to savor access to applications and files if they are on a local network segment, but blocks users from accessing the same content when they are on a remote segment for security and privacy reasons. This addition to group policies adds a third dimension to policies so that now administrators can not only define who and what someone has access to, but likewise confine their access based on where they are.

Group policies are covered in detail in Chapter 27, "Group Policy Management for Network Clients," as well as in Chapter 19, "Windows Server 2008 R2 Group Policies and Policy Management."

Introducing Performance and Reliability Monitoring Tools

Windows Server 2008 R2 introduces fresh and revised performance and reliability monitoring tools intended to serve network administrators better understand the health and operations of Windows Server 2008 R2 systems. Just affection with the Group Policy Management Console, the fresh Reliability and Performance Monitor shows up as a feature in the Server Manager console. By clicking on the Performance Diagnostic Console, the tool shows up in the right pane, as shown in device 1.8.

Figure 1.8

Figure 1.8 Windows Reliability and Performance Monitor.

The fresh tool keeps track of system activity and resource usage and displays key counters and system status on screen. The Reliability Monitor diagnoses potential causes of server instability by noting the eventual time a server was rebooted, what patches or updates were applied, and chronologically when services savor failed on the system so that system faults can potentially breathe traced back to specific system updates or changes that occurred prior to the problem.

By combining what used to breathe three to four tools into a single console, administrators are able to perceive at system performance, operational tasks, and historical event information in their analysis of a server problem or system operations instability. You can find more details on performance and reliability monitoring in Chapter 34.

Leveraging File Server Resource Manager

File Server Resource Manager (FSRM) was a feature pack add-in to Windows 2003 R2 and has been significantly improved with the release of Windows Server 2008 R2. FSRM is a quota management system of files on network shares across an enterprise. Rather than allowing employees to copy the entire content of their laptop to a network, or potentially back up their MP3 audio files onto a network, FSRM provides the talent to not only confine the amount of content stored on network shares, but likewise to set quotas (or confine storage altogether) on inevitable file types. So, a user could breathe limited to store 200GB of files on a network share, but of that limit, only 2GB can breathe allocated to MP3 files.

FSRM, shown in device 1.9, in Windows Server 2008 R2 has been improved to allow the nesting of quotas to ensure the most restrictive policy is applied. Quotas can likewise transcend subfolders, so as fresh folders are created, or as policies are applied at different levels in a folder hierarchy, the policies still apply, and the rules are combined to provide varying levels of quota allocation to user data. Additionally, quotas are now based on actual storage, so if a file is compressed when stored, the user will breathe able to store more files within their allocated quota.

File Server Resource Manager is covered in detail in Chapter 28.

Leveraging the Best practice Analyzer

Included in Windows Server 2008 R2 is a built-in Best practice Analyzer. organize in the Server Manager console tool, the Best practice Analyzer runs a series of tests against lively Directory roles, such as the Hyper-V role, the DNS role, and the Remote Desktop Services role, to assess whether the role has been installed and configured properly and to compare the installation with tested best practices.

Some of the results from the Best practice Analyzer could iterate an administrator they requisite to add more recollection to a server, to roam a role to a separate server to ameliorate role optimization, or to shift a database to a different drive on the server to ration disk performance demands on the system. More details on the Best practice Analyzer are covered in Chapter 20.

Introduction of Windows Deployment Services

Windows Server 2008 introduced a fresh tool called Windows Deployment Services (WDS), which was effectively an updated version of the Remote Installation Services (RIS) that has been available for the past several years. Unlike RIS, which was focused on primarily scripted installations and client images, WDS in Windows Server 2008 R2 can ration images of Windows 7 clients or Windows Server 2008 R2 servers in a significantly more resilient and modifiable deployment process.

Like with RIS, Windows Deployment Services allows a client system to initiate a Preboot Execution Environment (PXE), effectively "booting" to the WDS server to descry a list of images that can breathe deployed on the system. Alternately, an organization can create a Windows PE boot disc and savor an image initiated from a CD or DVD.

With Windows Server 2008 R2 and Windows 7, the image can breathe created in Windows Imaging (WIM) format, which allows for the injection of patches, updates, or even fresh code to a WIM file without even booting the image file. This provides the organization with more than just static images that procure pushed out affection in RIS, but rather a tool that provides ongoing and manageable updates to image files.

WDS likewise supports the imaging of Windows 2003 servers and Windows XP client systems in the same manner that RIS did in terms of pushing out images or using an unattend script file to ship images to systems.

Windows Deployment Services is covered in detail in Chapter 26, "Windows Server 2008 R2 Administration Tools for Desktops."



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American-College [2 Certification Exam(s) ]
Android [4 Certification Exam(s) ]
APA [1 Certification Exam(s) ]
APC [2 Certification Exam(s) ]
APICS [2 Certification Exam(s) ]
Apple [69 Certification Exam(s) ]
AppSense [1 Certification Exam(s) ]
APTUSC [1 Certification Exam(s) ]
Arizona-Education [1 Certification Exam(s) ]
ARM [1 Certification Exam(s) ]
Aruba [6 Certification Exam(s) ]
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BlackBerry [17 Certification Exam(s) ]
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Certification-Board [10 Certification Exam(s) ]
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CheckPoint [41 Certification Exam(s) ]
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Citrix [47 Certification Exam(s) ]
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Cloudera [10 Certification Exam(s) ]
Cognos [19 Certification Exam(s) ]
College-Board [2 Certification Exam(s) ]
CompTIA [76 Certification Exam(s) ]
ComputerAssociates [6 Certification Exam(s) ]
Consultant [2 Certification Exam(s) ]
Counselor [4 Certification Exam(s) ]
CPP-Institue [2 Certification Exam(s) ]
CPP-Institute [1 Certification Exam(s) ]
CSP [1 Certification Exam(s) ]
CWNA [1 Certification Exam(s) ]
CWNP [13 Certification Exam(s) ]
Dassault [2 Certification Exam(s) ]
DELL [9 Certification Exam(s) ]
DMI [1 Certification Exam(s) ]
DRI [1 Certification Exam(s) ]
ECCouncil [21 Certification Exam(s) ]
ECDL [1 Certification Exam(s) ]
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Enterasys [13 Certification Exam(s) ]
Ericsson [5 Certification Exam(s) ]
ESPA [1 Certification Exam(s) ]
Esri [2 Certification Exam(s) ]
ExamExpress [15 Certification Exam(s) ]
Exin [40 Certification Exam(s) ]
ExtremeNetworks [3 Certification Exam(s) ]
F5-Networks [20 Certification Exam(s) ]
FCTC [2 Certification Exam(s) ]
Filemaker [9 Certification Exam(s) ]
Financial [36 Certification Exam(s) ]
Food [4 Certification Exam(s) ]
Fortinet [12 Certification Exam(s) ]
Foundry [6 Certification Exam(s) ]
FSMTB [1 Certification Exam(s) ]
Fujitsu [2 Certification Exam(s) ]
GAQM [9 Certification Exam(s) ]
Genesys [4 Certification Exam(s) ]
GIAC [15 Certification Exam(s) ]
Google [4 Certification Exam(s) ]
GuidanceSoftware [2 Certification Exam(s) ]
H3C [1 Certification Exam(s) ]
HDI [9 Certification Exam(s) ]
Healthcare [3 Certification Exam(s) ]
HIPAA [2 Certification Exam(s) ]
Hitachi [30 Certification Exam(s) ]
Hortonworks [4 Certification Exam(s) ]
Hospitality [2 Certification Exam(s) ]
HP [746 Certification Exam(s) ]
HR [4 Certification Exam(s) ]
HRCI [1 Certification Exam(s) ]
Huawei [21 Certification Exam(s) ]
Hyperion [10 Certification Exam(s) ]
IAAP [1 Certification Exam(s) ]
IAHCSMM [1 Certification Exam(s) ]
IBM [1530 Certification Exam(s) ]
IBQH [1 Certification Exam(s) ]
ICAI [1 Certification Exam(s) ]
ICDL [6 Certification Exam(s) ]
IEEE [1 Certification Exam(s) ]
IELTS [1 Certification Exam(s) ]
IFPUG [1 Certification Exam(s) ]
IIA [3 Certification Exam(s) ]
IIBA [2 Certification Exam(s) ]
IISFA [1 Certification Exam(s) ]
Intel [2 Certification Exam(s) ]
IQN [1 Certification Exam(s) ]
IRS [1 Certification Exam(s) ]
ISA [1 Certification Exam(s) ]
ISACA [4 Certification Exam(s) ]
ISC2 [6 Certification Exam(s) ]
ISEB [24 Certification Exam(s) ]
Isilon [4 Certification Exam(s) ]
ISM [6 Certification Exam(s) ]
iSQI [7 Certification Exam(s) ]
ITEC [1 Certification Exam(s) ]
Juniper [63 Certification Exam(s) ]
LEED [1 Certification Exam(s) ]
Legato [5 Certification Exam(s) ]
Liferay [1 Certification Exam(s) ]
Logical-Operations [1 Certification Exam(s) ]
Lotus [66 Certification Exam(s) ]
LPI [24 Certification Exam(s) ]
LSI [3 Certification Exam(s) ]
Magento [3 Certification Exam(s) ]
Maintenance [2 Certification Exam(s) ]
McAfee [8 Certification Exam(s) ]
McData [3 Certification Exam(s) ]
Medical [69 Certification Exam(s) ]
Microsoft [368 Certification Exam(s) ]
Mile2 [2 Certification Exam(s) ]
Military [1 Certification Exam(s) ]
Misc [1 Certification Exam(s) ]
Motorola [7 Certification Exam(s) ]
mySQL [4 Certification Exam(s) ]
NBSTSA [1 Certification Exam(s) ]
NCEES [2 Certification Exam(s) ]
NCIDQ [1 Certification Exam(s) ]
NCLEX [2 Certification Exam(s) ]
Network-General [12 Certification Exam(s) ]
NetworkAppliance [36 Certification Exam(s) ]
NI [1 Certification Exam(s) ]
NIELIT [1 Certification Exam(s) ]
Nokia [6 Certification Exam(s) ]
Nortel [130 Certification Exam(s) ]
Novell [37 Certification Exam(s) ]
OMG [10 Certification Exam(s) ]
Oracle [269 Certification Exam(s) ]
P&C [2 Certification Exam(s) ]
Palo-Alto [4 Certification Exam(s) ]
PARCC [1 Certification Exam(s) ]
PayPal [1 Certification Exam(s) ]
Pegasystems [11 Certification Exam(s) ]
PEOPLECERT [4 Certification Exam(s) ]
PMI [15 Certification Exam(s) ]
Polycom [2 Certification Exam(s) ]
PostgreSQL-CE [1 Certification Exam(s) ]
Prince2 [6 Certification Exam(s) ]
PRMIA [1 Certification Exam(s) ]
PsychCorp [1 Certification Exam(s) ]
PTCB [2 Certification Exam(s) ]
QAI [1 Certification Exam(s) ]
QlikView [1 Certification Exam(s) ]
Quality-Assurance [7 Certification Exam(s) ]
RACC [1 Certification Exam(s) ]
Real-Estate [1 Certification Exam(s) ]
RedHat [8 Certification Exam(s) ]
RES [5 Certification Exam(s) ]
Riverbed [8 Certification Exam(s) ]
RSA [15 Certification Exam(s) ]
Sair [8 Certification Exam(s) ]
Salesforce [5 Certification Exam(s) ]
SANS [1 Certification Exam(s) ]
SAP [98 Certification Exam(s) ]
SASInstitute [15 Certification Exam(s) ]
SAT [1 Certification Exam(s) ]
SCO [10 Certification Exam(s) ]
SCP [6 Certification Exam(s) ]
SDI [3 Certification Exam(s) ]
See-Beyond [1 Certification Exam(s) ]
Siemens [1 Certification Exam(s) ]
Snia [7 Certification Exam(s) ]
SOA [15 Certification Exam(s) ]
Social-Work-Board [4 Certification Exam(s) ]
SpringSource [1 Certification Exam(s) ]
SUN [63 Certification Exam(s) ]
SUSE [1 Certification Exam(s) ]
Sybase [17 Certification Exam(s) ]
Symantec [134 Certification Exam(s) ]
Teacher-Certification [4 Certification Exam(s) ]
The-Open-Group [8 Certification Exam(s) ]
TIA [3 Certification Exam(s) ]
Tibco [18 Certification Exam(s) ]
Trainers [3 Certification Exam(s) ]
Trend [1 Certification Exam(s) ]
TruSecure [1 Certification Exam(s) ]
USMLE [1 Certification Exam(s) ]
VCE [6 Certification Exam(s) ]
Veeam [2 Certification Exam(s) ]
Veritas [33 Certification Exam(s) ]
Vmware [58 Certification Exam(s) ]
Wonderlic [2 Certification Exam(s) ]
Worldatwork [2 Certification Exam(s) ]
XML-Master [3 Certification Exam(s) ]
Zend [6 Certification Exam(s) ]





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