What is DNS ?
Domain Name System is the phone book of Internet. Human accesses information online through domain names like www.google.com or www.facebook.com. Web browsers interact through IP (Internet Protocol) addresses. DNS translates domain names to IP addresses.
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Devices which connects to internet has unique IP addresses, which other machines use to identify. DNS free people from memorizing long numeric IP Address such as IP V4 192.168.1.255 to simple human-readable domain name like youtube.com.
You can think of DNS as a phonebook on your phone where domain name is like your contact name and IP address is contact number.
In conclusion, DNS is important because it helps the clients find correct site to connect and without it we can not access any website at all.
