What is a DNS Cache?

 A valuable reader asks about the DNS Cache in my previous post about clearing the DNS Cache. So I thought it was worthy a post rather than a comment.
So what is DNS. The Domain Name System (DNS) is responsible for translating IP addresses to Domain Names and vice versa. IP address is a number that [...]

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I’ve always been confused about the math symbols used in computers .. so here’s the symbols for my ease and your knowledge.. 

prefix    symbol  power
kilo       k          10^3
mega    M         10^6
giga      G          10^9
tera       T          10^12

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