Why is DNS necessary? State its significance.
|NU Year||Set: 4.(d) Marks: 2+2=4 Year: 2017|
The Domain Name System (aka 18.104.22.168. DNS also provides other information about domain names, such as mail services.) is used to resolve human-readable hostnames like www.Dyn.com into machine-readable IP addresses like
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.
When you visit http://dyn.com in a browser, your computer uses DNS to retrieve the website’s IP address of 22.214.171.124. Without DNS, you would only be able to visit our website (or any website) by visiting its IP address directly, such as http://126.96.36.199.