Daren Matthews

Browsers can setup two or more TCP connections to an HTTP server to facilitate parallel downloads. As the browser parses the Web page it is aware of which objects it needs to download.

Rather than send the requests in series over a single connection, the requests are sent over parallel connections to enable faster downloading of the Web page. Another technique used by browsers to improve the performance is “HTTP pipelining”. Read more…

Courtesy of Keith Barker

Another Aide memoir:

UNIX SECURITY TECHNICAL IMPLEMENTATION GUIDE
Version 5, Release 1

Can be downloaded from: http://iase.disa.mil/stigs/downloads/pdf/unix-stig-v5r1.pdf

Modern processors can only handle one instruction from one program at any given point in time. Each instruction that is sent to the processor is called a thread. Even though it seems as if you’re multitasking with your computer (running more then one program at a time) you’re really not . Read more…

The Open Source Xen hypervisor runs directly on the hardware and becomes the interface for all hardware requests such as CPU, I/O, and disk for the guest operating systems.  By separating the guests from the hardware, the Xen hypervisor is able to run multiple operating systems securely and independently. Read more…