What is a DNS Query?

A DNS query is essentially a request made by a client (like your computer or smartphone) to a Domain Name System (DNS) server, asking for information about a specific domain name. When you enter a web address into your browser, a DNS query is initiated to resolve that domain name to its corresponding IP address, which is necessary for the device to connect to the correct server on the internet.

This process is fundamental to how the internet works, as humans find it easier to remember domain names rather than numerical IP addresses. By sending a query to the DNS server, the client can get the necessary data to continue the process of loading a website or connecting to a service.

The other options describe different concepts: updating DNS records refers to modifying entries within the DNS database, a firewall rule pertains to network security by controlling traffic, and file transfer methods do not relate to DNS queries at all. Each of these options serves a distinct function in computer networking, but only the request made to obtain DNS information aligns with the definition of a DNS query.