Cisco CCNA Service Provider Question of the Week
Which equipment type helps eliminate collisions?
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Virtualization for Newbies: Top Four Reasons to Go Virtual
In general, the idea behind virtualization is to make many from one. As an example, from one physical server using virtualization software, multiple virtual machines can run as if each virtual machine were a separate physical box. In data centers, before virtualization, one or more applications and an operating system would run on their own unique physical server. Since each one of those physical servers needed floor or rack space, there was a problem of the growing size and number of data centers that businesses needed in IT. As more and more physical servers were added to run the ever growing number of virtual machines, this led to “data center sprawl.” Using virtualization to consolidate the number of physical servers reversed the trend of data center sprawl, and companies began to see a cost savings.
Read moreNational Security in the Hands of Fifth Graders
What if our nation’s security was in the hands of fifth graders? An obvious exaggeration, but Lieutenant General Keith Walker made the point that the US Army is preparing its network to serve commanders in 2030, or today’s fifth grade boys and girls.
Read moreWhy You Should Use Multi-Step Authentication
Authentication is one of the essential components of security. It is one part of the concept known as authentication, authorization, and accounting (AAA). AAA stands for authentication, authorization, and accounting. Authentication is the process of claiming an identity then proving that you are that claimed identity. Authorization is the mechanism to control what you can access or do. Accounting is the recording of events into a log in order to review the activities against the rules and policies in order to detect violations or confirm compliance. All three of these should be addressed when constructing a system in order to have a reasonable foundation for reliable security.
Read moreA+ Question of the Week
Which component of an LCD display powers the backlight and should be suspected when there is no image until you shine light onto the display?
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