Posts Tagged ‘Comptia A+ Certification’

09.1
12

MCTS Video At No. 1 Site Certkingdom

by lilycollins24@gmail.com ·

MCTS Video At No. 1 Site Certkingdom


certkingdom offers self-study MCTS training to IT technicians seeking to enhance their careers through certification. If you want to specialize in a Microsoft technology, earning this credential proves that not only do you care about getting relevant technical skills for today’s business world, it also validates those skills and prepares you for specific job roles. Choose an MCTS certkingdom training course for self-paced training that you participate in on your computer. Each self-study MCTS certkingdom course features a complete curriculum that prepares you for the required certification exams through a series of videos. A certified instructor leads you throughout the MCTS training appearing in full motion videos that you can access whenever you are ready to train.

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03.1
12

Oak Ridge lab to deploy fast Titan supercomputer

by IT Trainer ·

A government research lab in Tennessee will deploy a new supercomputer later this year that could put the U.S. back in contention for the top spot on the list of the world’s fastest supercomputers.

The Titan supercomputer at the Oak Ridge National Laboratory is on track for completion by autumn, and will deliver between 10 petaflops (10,000 trillion operations per second) and 20 petaflops of peak performance, the ORNL said Wednesday. The initial phase of its development has just been completed, the lab said.

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Titan, which is a Cray XK6 system, will be the result of hardware upgrades to ORNL’s existing Jaguar supercomputer, which delivers 3.3 petaflops peak performance.

The world’s fastest supercomputer today, the K Computer in Japan, delivers a peak performance of 10.51 petaflops, according to the most recent Top500 list of the world’s fastest supercomputers. The lists are issued each June and November, and the last U.S. supercomputer to hold the top spot was ORNL’s Jaguar in November 2009.

Lately, the U.S. has been playing catch-up in the supercomputing race to China and Japan, which have had the fastest systems since early 2010. Russia is building a 10-petaflop supercomputer that will be deployed by the end of 2013, and another supercomputer in the U.S., the 10-petaflop Stampede system, will be operational at the University of Texas in early 2013.

The next big milestone for supercomputers is to reach exaflop performance, which would be about 100 times as fast as today’s fastest supercomputers, by 2018.

Titan will combine Advanced Micro Devices’ latest 16-core Opteron 6200 CPUs with Nvidia’s Tesla graphics processors. The 16-core CPUs replace two existing six-core Opteron chips to provide more general-purpose computing power, while the Nvidia processors will boost specific scientific and math calculations. The system’s interconnect and memory are also being upgraded.

Titan will have 299,008 cores and 600 terabytes of memory when completed. Titan was originally announced in October 2011.

Supercomputers allow chip makers to show off the performance of their microprocessors. While AMD may have an edge after Titan is up and running, the Stampede supercomputer will use Intel’s upcoming Xeon E5 processors and a co-processor named Knights Corner to accelerate specialized applications.

ORNL is managed by University of Tennessee at Battelle for the U.S. Department of Energy.

02.27
12

Does a Mozilla smartphone/tablet OS have a chance against Android and iOS?

by IT Trainer ·

If Mozilla has teamed up with a hardware partner (or partners) then it’s serious about B2G, and if it’s serious about B2G, then it’s also serious about going head-to-head against Apple and Google.

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If rumors are to be believes, not only will Mozilla take the wraps off the Mozilla Marketplace at next week’s Mobile World Congress, but it will also announce that it has teamed up with LG to bring a developer-oriented mobile device to market.

Does Mozilla stand a chance against the likes of Android, Chrome, Windows Phone (and Windows 8) and iOS when it comes to smartphone and tablet operating systems?

Mozilla Marketplace is the company’s plan to bring apps to Firefox, which will make a debut with Firefox 13 in June. However, Mozilla has also hinted as aspirations to enter the OS market with it’s Boot to Gecko (B2G) project, a OS that runs HTML5, JavaScript and CSS directly on device hardware without the need for an intermediate OS layer.

According to ExtremeTech, Mozilla has partnered with LG and is to announce a developer device that could go on sale as early as next week, and that this device will give developers the chance to start developing apps for B2G.

However, at present there’s really no sign of B2G code, so it’s likely that any devices sold now would sit on desks gathering dust until later in the year. This fact alone makes me suspect that there won’t be a device on sale next week, and that at best this is an announcement.

But either way it’s interesting. If Mozilla has teamed up with a hardware partner (or partners) then it’s serious about B2G, and if it’s serious about B2G, then it’s also serious about going head-to-head against Apple and Google.

And that could be a huge problem for Mozilla. Apple and Google are titans of the tech industry, and by comparison Mozilla is, well, nothing. Even Microsoft is having a tough time breaking into the post-PC device market, and that company has billions at its disposal and enormous reach into almost every corner of the consumer and enterprise IT markets. If Microsoft is having a hard time going up against Apple and Google, what’s Mozilla’s secret sauce?

Mozilla might have been able to outmaneuver Microsoft when it came to offering an alternative web browser, but this is an entirely different thing. Giving away a free browser is very different to trying to sell hardware of a platform. Not only that, but Google and Apple are far more on the ball than Microsoft was when it comes to protecting their markets and threat recognition.

I see this playing out in one of three ways:

Fantasy-case scenario: Mozilla becomes a big player in post-PC hardware with B2G and offers hardware OEMs and carriers an alternative to Google, Apple and Microsoft’s walled-garden approach (yeah, right … ).
Best-case scenario: B2G hardware dies on the vine before Mozilla invests too much money and development time in the project.
Worst-case scenario: Google, Apple and Microsoft tag-team Mozilla in the courts, dragging the company into the ongoing litigation mess that the mobile hardware market has evolved into, and Mozilla ends up hemorrhaging cash.

I see what Mozilla is trying to do here. It’s basically trying to turn every copy of Firefox, no matter where it is, into an operating system capable of running apps. That’s a noble idea (although you might wonder just how fragmented the app market is going to get soon, with everyone wanting a piece of it), but B2G takes it a step further to the point where Mozilla wants to become the platform of its own. And it’s that plan that puts Mozilla on a collision course with the Goliaths of the tech industry.

I’m thinking that Mozilla has bitten off more than it can chew here.

12.14
11

Google pays record $26K in Chrome bug bounties

by admin ·

Revamps New Tab page with upgrade to Chrome 15

Computerworld – Google paid out a record $26,511 in bug bounties to researchers who reported some of the 18 Chrome vulnerabilities patched today.

 

 

 

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The company also upgraded the stable version of the browser to version 15, which sports a revamped New Tab page.

Google last refreshed Chrome on Sept. 16, just over five weeks ago. Google produces an update to its “stable” channel about every six weeks, a practice that rival Mozilla copied with the debut of Firefox 5 last June.

Eleven of the 18 vulnerabilities were rated “high,” the second-most-serious ranking in Google’s scoring system, while three were tagged “medium” and another four were marked “low.”

Google paid $26,511 in bounties, a record, to four researchers, including $13,674 to Sergey Glazunov and $10,337 to “miaubiz,” a pair of regular Chrome vulnerability finders who together have accounted for 57% of all bug payments this year. Google has laid out over $170,000 in bounties so far during 2011.

The previous bounty record, set more than two months ago, was $17,000.

Glazunov and miaubiz collected their five-figure checks for reporting multiple bugs that Google then combined into one CVE (Common Vulnerabilities & Exposures) identifier.

Glazunov, for example, was awarded $12,147 for five bugs that Google named only as “cross-origin policy violations” and pooled under a single CVE in its typically terse description.

Miaubiz, meanwhile, was paid $6,337 for one CVE that actually contained six different bugs tracked by Google in its change database.

As is its habit, Google barred access to the bug tracker database for all the vulnerabilities to prevent outsiders from obtaining details on the flaws.

Most of the bugs uncovered by miaubiz, said Google, were discovered using the company’s memory error detection tool, AddressSanitizer, that it released in June.

AddressSanitizer can detect a variety of errors, including “use-after-free” memory management bugs like the ones reported by miaubiz.

Google also said it updated Chrome to stymie BEAST, for “Browser Exploit Against SSL/TLS,” a hacking tool released last month that attacks browsers and decrypts cookies, potentially giving attackers access to encrypted website log-on credentials.

Previously, Google had added anti-BEAST protection to Chrome’s “dev” and “beta” channels, the rougher-edged versions that precede the stable build.

Microsoft has promised to patch Windows so that its Internet Explorer isn’t vulnerable to BEAST’s attacks, but has not set a timetable.

Chrome 15’s most obvious change, however, is the redesigned New Tab page that appears when users click the right-most tab at the top of the browser’s window or press the Ctrl-T key combination.

The new format offers easier navigation between online apps and most-used websites, the ability to organize apps by dragging and dropping, and a simpler way to remove apps or site from the screen.

Chrome 15 can be downloaded for Windows, Mac OS X and Linux from Google’s Web site. Users already running the browser will be updated automatically via the browser’s behind-the-scenes service.

09.12
11

Does HTC need to buy an OS? Probably not

by IT Trainer ·

I don’t think that HTC needs to ‘buy’ an OS, after all, what would it buy?

Interesting piece over on Focus Taiwan which reports on quotes made by HTC chairwoman Cher Wang in relation to HTC buying its own operating system.

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Here’s the quote that’s got the blogosphere all fired up:

“We have given it thought and we have discussed it internally, but we will not do it on impulse,” Wang said in an interview with the Economic Observer of China.

I’m not even sure that the quote even suggests that HTC is serious about this, since thought and internal discussions are far removed from action. And that bit about not acting on impulse also suggests that this is not something in HTC’s immediate future.

The next quote makes it clear where HTC is headed:

“We can use any OS we want. We are able to make things different from our rivals on the second or third layer of a platform,” Wang said. “Our strength lies in understanding an OS, but it does not mean that we have to produce an OS.”

The ’second or third layer’ Wang mentions here refers to the HTC Sense UI that HTC ships on devices to make them easier to use than the standard Android UI. Wang understand that HTC doesn’t need to buy and OS to do a good job of putting an OS on a device.

I don’t think that HTC needs to ‘buy’ an OS. First of all, what would it buy” The failed webOS that Palm and HP couldn’t really do anything with, or the failed Meego? Secondly, there are only three mobile OSes that are worth bothering with nowadays – iOS, Android and Windows Phone – and two of those OSes – Android and Windows Phone – are open to HTC. The idea of buying an OS and then trying to turn that into a viable ecosystem just doesn’t make sense.

Is there any reason why HTC might have been thinking about buying an OS? Well, HP made some big noises about webOS, right up until the wheels fell off so that might have had something to do with it. Then Microsoft’s cosy relationship with Nokia might have made the company a little nervous that it was being handed its hat with regards to Windows Phone.

09.9
11

The top 10 geek sins that will get your geek card revoked

by IT Trainer ·

Here are 10 of the worst transgressions for any geek. Doing any one of these will put your geek credentials at risk. Do two of them and your geek card immediately gets revoked.

TechRepublic has previously talked about some of the things you can do to increase your geek cred. Naturally, there are also some things that can hurt your geek cred. In fact, we’ve put together a list of 10 of the worst transgressions for any geek. Doing any one of these will put your geek credentials at risk. Do two of them and your geek card immediately gets revoked.

You can view our list in two forms. You’ll find the simple list below, or you can check it out in slideshow format with the accompanying visuals.

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10. Admitting that you like iTunes

Sure, it’s convenient for buying music and media in one place and syncing it to an iPod or iPhone, but iTunes has a draconian DRM system (still in place for media), makes it difficult to manage your library on multiple systems, and it started out as one of the worst pieces of bloatware ever built. And, it hasn’t gotten much better.

9. Not knowing the difference between binary and hexadecimal

Binary is the basis of all computing and is simply composed of zeros and ones. Hexadecimal is a 16-digit numeric system — based on numbers 0-9 and letters A-F — that represents binary in a more friendly way. Know the difference.

8. Not knowing what MMORPG stands for

Even if you don’t play games (or rarely play) you should know that an MMORPG is a “massively multiplayer online role-playing game,” also known as the alternate reality for geeks. The biggest one is World of Warcraft (WoW), a cultural phenomenon with over 12 million subscribers.

7. Loving your cable or telecom company

Geeks built the Internet. Geeks live on the Internet. Geeks love the Internet. However, the companies that bring us the Internet to our homes and offices — the telecoms and cable companies — are doing everything they can to wall it off, manipulate it for their own financial gain, and stop geeks from using it so much. For as long as they do that, they will remain at war with the geekosphere.

6. Not knowing the name of the book that Blade Runner was based on

Blade Runner is one of the greatest sci-fi movies of all time. If you’re a true geek, you’ve seen it multiple times. But, not only that, you also know that it’s based on Philip K. Dick’s “Do Androids Dream of Electric Sheep?” which is one of the best-titled stories in all of literature and an absolute classic in science fiction.

5. Confusing Star Wars and Star Trek

If someone mentions a Wookie and a Klingon and you’re not sure which one was part of the Star Wars universe and which one belongs to the Star Trek milieu, you are definitely not a geek.

4. Believing the “free” in open source refers to price

Repeat after me, “Open source does not mean it doesn’t cost anything.” Sure, some open source software is freely available to download at no cost. But, that’s not a requirement of open source. There is plenty of open source software that requires a fee. When open source talks about “free” software, they are referring to “free” as in “freedom.” It is freedom from overreaching licensing agreements. You’ll also hear this concept referred to as “Gratis verses Libre.”

3. Defending Facebook for its privacy transgressions

Look, Facebook is lucky the entire geekosphere hasn’t dropped it like a bad habit after all of the crap they’ve pulled in changing and violating their own lackluster privacy policies. Leo Laporte nearly led a geek revolt out of Facebook in May 2010. The only thing that prevented it was lack of a viable alternative.

2. Taking something into Geek Squad to get fixed

Best Buy’s Geek Squad has a few legitimate geeks on staff; however, too many of their technicians are completely clueless and can do more harm than good to your equipment. Besides, if you’re geek, just geek-up, open up the case, and fix it yourself. (Exception: It’s acceptable to go to the Geek Squad counter to exchange a DOA device that is still under warranty. Just don’t let us catch you asking for advice.)

1. Buying a paper computer book at Barnes & Noble

In 1999, if you wanted to quickly learn more about HTML or Exchange 5.5 or Apache or how to earn CCNA certification, you’d typically make a quick trip to your nearest book superstore like Barnes & Noble or Borders and comb through the huge selection of computer books. However, this is 2010. Any computer book you find at a bookstore is at least six months out of date. Almost everything you need to know is available on the web for free or in ebook format that you can quickly download to your laptop or tablet. Buying a dead-tree tome about a new technology is an immediate tip-off that your geek credentials are in question.

This article was originally published on TechRepublic.

09.8
11

Microsoft’s Lync communications client for Mac goes gold

by IT Trainer ·

Microsoft is readying the Mac client version of its Lync unified communications product. The Lync Mac client RTM’d on September 8 and will be on price lists next month.

Microsoft has released to manufacturing (RTM’d) its Lync unified communications client for the Mac, company officials said on September 9.

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Lync for Mac will be on Microsoft’s price lists starting October 1, company officials said. Lync for Mac will be included with every purchased copy of Office for Mac Standard 2011 through volume licensing.

The Lync for Mac client will work in conjunction with both Lync Server and Microsoft’s Lync Online service (which is available standalone and as part of Office 365). Lync is the successor to Office Communications Server and includes enterprise instant messaging, audio and video conferencing, support for presence and voice-over-IP (VOIP).

Microsoft is working on Lync clients for a variety of other platforms, including all the leading smartphone platforms. Officials have said that they will deliver Lync for iPhone, Android, Symbian and Windows Phones before the end of this calendar year.

Microsoft launched its on-premises Lync Server in November 2010 and the accompanying Windows client in December 2010. Update: There’s also a Web-based Lync app out there, as well.

Microsoft is planning to integrate Skype with Lync and make that integration available to users in some way/ways in the coming months.

09.6
11

Preparing for the CertKingdom Microsoft 70-297 exam

by IT Trainer ·

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08.29
11

HP ships VirtualSystem, targets storage management, VMware vSphere 5 integration

by IT Trainer ·

HP’s VirtualSystem comes in three flavors targeted at large enterprises, midsized companies and small businesses.

HP on Monday began shipping its VirtualSystem, which is designed to offer a turnkey VMware vSphere 5 hardware stack.

VirtualSystem includes VMware and HP’s networking, storage and servers. HP’s Insight software serves as the automation glue between these systems.

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In the broader picture, HP’s VirtualSystem competes with the VCE coalition, which is a venture between Cisco, EMC and VMware to offer bundled systems. HP’s VirtualSystem starts at $167,300 and includes factory integration, three years of support and storage, networking and servers. Customers can leverage existing vSphere 5 licenses or buy them preinstalled.

HP’s other key item for the VirtualSystem is that it leverages its recent storage acquisitions, LeftHand and 3Par. LeftHand serves as the storage foundation for VirtualSystem and provides features such as snapshot to recover, transparent fail over and the ability to run LeftHand in a virtual machine.

Craig Nunes, director for marketing at HP Storage, said LeftHand serves as the building block for the VirtualSystem and the biggest advantage is that customers won’t need standalone storage systems. Storage can be a large expense in virtualized environments.

Sean Kinney, director of HP Storage, added that HP is improving the set-up wizards so it’s easier to launch VirtualSystem with thin provisioning.

Overall, HP is arguing that VirtualSystem can speed up virtual machine mobility, halve capacity requirements and allow for remote troubleshooting and management. The systems come in three flavors and can be tailored to midsized and small businesses via channel partners.