What is “DNS” and what does it do?
a) Translates domain names into IP addresses
b) Encrypts data during transmission
c) Connects computers to the internet
d) Manages data storage on a network
Answer:
a) Translates domain names into IP addresses
Explanation:
DNS (Domain Name System) is a system that translates human-readable domain names, such as www.example.com, into IP addresses that computers use to communicate with each other over the internet. Without DNS, users would need to remember and enter numeric IP addresses to access websites.
When a user types a domain name into their browser, the DNS system looks up the corresponding IP address and directs the request to the correct server hosting the website. This makes it easier for users to navigate the web using familiar names.
DNS is a critical part of the internet’s infrastructure, allowing users to access websites and services by entering simple domain names rather than complex numerical addresses.