What Is DNS - Networking
DNS Explained - 2

You don’t remember individual mobile numbers. Instead, you go to your contacts app and call it by their names.

DNS Explained - 3

The contacts app allows people to input everyday words without having to keep track of the individual mole number.

DNS Explained - 4

This is the exact same thing DNS does for the internet. Domain Name System

DNS Explained - 5

Computers address each other with numbers called IP addresses, which ultimately use ARP for MAC address resolution.

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However, remembering IP addresses is not an easy task for humans. We prefer to give things named URLs or UNC’s.
DNS Explained - 7
But computers don’t understand names, they enjoy 1’s and 0’s, or numbers. Again, IP addresses and MAC addresses.
DNS Explained - 8

That is where DNS comes into play. DNS is a system that ties names to IP addresses. DNS automatically converts the names we type in our web browser address bar to the IP addresses of web services for those specific sites requested.

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The URL type in by the user has to go through at least four servers for the IP address to be provided, in some cases more if a proxy server is involved.

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