Which is a function of the DNS server?

The function of the DNS (Domain Name System) server is to keep a list of names and their associated IP addresses. This system is crucial for the functionality of the internet, as it translates human-readable domain names (like www.example.com) into machine-readable IP addresses (like 192.0.2.1). When you enter a web address in your browser, the DNS server performs the task of looking up the corresponding IP address so that the browser can connect to the correct server hosting the requested website.

This mapping between names and IP addresses enables users to access websites without needing to remember numerical IP addresses, streamlining the process of navigating the internet. The other functions listed in the choices misrepresent the primary role of a DNS server; while they are relevant to networking and internet functionality, they do not pertain to the core purpose of DNS services.