What is DNS, and what is its primary role?

What is DNS, and what is its primary role?

• A. Domain Name System translates human-readable domain names to IP addresses for routing network traffic.
• B. DNS stores user credentials for websites.
• C. DNS is a type of data storage.
• D. DNS compresses data.

Answer: (A)

DNS translates domain names into IP addresses so network traffic can be routed correctly. When you enter a web address, your device asks a DNS resolver to find the numeric address of the server, and once it has that IP, the request is directed to the right place. This system lets people use memorable names while computers work with numbers. DNS is a distributed set of servers that caches lookups to speed things up, ensuring you reach the right server quickly. It’s not used for storing user credentials, data storage, or data compression—those are different functions outside of DNS’s job.

DNS translates domain names into IP addresses so network traffic can be routed correctly. When you enter a web address, your device asks a DNS resolver to find the numeric address of the server, and once it has that IP, the request is directed to the right place. This system lets people use memorable names while computers work with numbers. DNS is a distributed set of servers that caches lookups to speed things up, ensuring you reach the right server quickly. It’s not used for storing user credentials, data storage, or data compression—those are different functions outside of DNS’s job.