Slide 5
Slide 5 text
Server and Network Basics
• Linux: Free, stable, secure, and open-source operating
system used by most servers. It comes in many
versions, all similar but with some differences. Our
preference is CentOS.
– Linux is based on Unix, an older operating system, and if
you use a Mac, it’s “guts” are based on Unix, too. That’s
why the command line is similar.
– Though Linux can come with a GUI, for performance
reasons, it is not generally installed on servers. You should
get comfortable with the command line if not already.
5
The Lingo
• Virtual Machine: A software abstraction that emulate the computer architecture and
functions of a real computer. A computer can contain many virtual machines with their
own operating systems each with an allotted percentage of CPU power and other
resources.
– The operating system doesn’t know or care that it’s running in a virtual environment.
– The Cloud consists of virtual machines.
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