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For several years, most news articles about a computer, network, or Internet-based compromise have mentioned the phrase "zero day exploit" or "zero day attack," but rarely do these articles define what this is. A zero day exploit is any attack that was previously unknown to the target or security experts in general. Many believe that the term refers to attacks that were just released into the wild or developed by hackers in the current calendar day. This is generally not the case. The "zero day" component of the term refers to the lack of prior knowledge about the attack, highlighting the idea that the victim has zero day's notice of an attack. The main feature of a zero day attack is that since it is an unknown attack, there are no specific defenses or filters for it. Thus, a wide number of targets are vulnerable to the exploit.

Shortly after being awarded an ITIL® Foundation certification, a recipient’s natural inclination is to ask: “Now what? How do I take the best practices I’ve learned and apply them to my organization?”

There are several Wireless LAN Standards, including b, g, and n, which exist in the 2.4 GHz band. These standards need around 20 MHz of radio frequency in order to transmit their signals. In this video, Ben Miller discusses how to pick access points and channels for optimal performance.

In this video, Practice Leader Craig Brown discusses our exclusive Server 2008 course - Configuring, Managing, and Maintaining Server 2008 R2 (M6419). Specifically, the enhancements we've made to this course through Server 2008 R2 supplemental learning materials and custom hands-on labs that enable the student to utilize critical Server 2008 R2 functions after completing the course.

Chief Technical Architect Craig Brown discusses the Windows 7 certification and skills tracks available to Global Knowledge students.

Michael Scarborough and Ryan Ballmer, co-authors of Global Knowledge ITIL courseware, discuss why ITIL is important to businesses.

Examine the evolution from physical servers to VMs to containers and the driving factors behind this change. Also review the available container management solutions on AWS, Google Cloud Platform and Microsoft Azure. 

Kirsten Lora, Global Knowledge Senior Product Director, explains the difference between our Business Analysis Essentials course and Business Process Analysis course.

The technologies examined reduce operational expenses (OpEx), not capital expenses (CapEx) that has traditionally been the focus of virtualization. Many companies implemented virtualization with the goal of saving money in the form of fewer servers to buy with a side benefit of reducing the footprint of the servers and lowering the required power and cooling. Most of the savings were in capital, but do not expect the same with many of the technologies listed here, because some may even require some additional capital expenditures, at least for software, in order to save on the day-to-day operations of IT. The bigger cost in running an IT department is in the OpEx category anyway, so savings there are recurring.

vSphere 5.5 is now available with myriad small improvements such as a faster Web Client, LACP, Autoscale and higher configuration maximums. In addition, there are changes coming such as VSAN, which may be ground-breaking in regard to VM storage of the future. Since the release of vSphere 5.5, they have not yet announced a change to the blueprint for the test. That being the case, I will say, for now, that the VCP-510 test should remain unchanged as well. My goal here is not to reeducate you on everything that you need to know for the test; instead, it is to point out the few changes that might apply in your company or organization.