1. DNS/IP

2. WHAT IS DNS?...IP?  Domain Name System (DNS) is a database system that translates a computer's fully qualified domain name into an IP address.  An IP (short for Internet Protocol address) can simply be define as the “corresponding address” that each Networked computer use to locate and connect to each other.

3. HOW DOES IT WORK?  We use the internet as the main door to enter the Web. The web is an infinite world.  Now, each website has its own “IP” or address which contains a number.  An example: To buy stuff online we would usually go to Amazon and we would type the DNS: www.amazon.com But what’s behind those letters and dots is the IP, which is the real address for this specific website (207.171.166.48). www.amazon.com

4. …IN A MUCH SIMPLER WAY…  Just like a street address determines the recipient of a letter, an IP address (short for Internet Protocol address) is used to identify computers on the Internet. When your computer sends a request, such as a Google query, it tags the request with its IP address in order for the response to be sent back to your computer -- just like a return address on a letter…this is known as “reverse DNS”

6. WHY IS THIS IMPORTANT?...TO SUM EVERYTHING UP…  …Because Networked computers use IP addresses to locate and connect to each other, but IP addresses can be difficult for people to remember  DNS is like a phone book for the Internet. If you know a person’s name but don’t know their telephone number, you can simply look it up in a phone book. DNS provides this same service to the Internet  In a much simplier way…without a DNS…it would harder to find an specific IP for a website.