Which of the following expands DNS?

Which of the following expands DNS?

• A. Domain Name System
• B. Domain Name Service
• C. Digital Network System
• D. Dynamic Name System

Answer: (A)

DNS stands for Domain Name System. This naming framework translates readable domain names like example.com into the IP addresses computers use to locate servers on the Internet. The word “System” signals that DNS is an organized, distributed architecture—composed of databases, root servers, authoritative servers, and resolvers—that works together to resolve names, not just a single service. The other options miss the established term: Domain Name Service would imply a Service rather than the full system, Digital Network System isn’t the recognized name for this function, and Dynamic Name System isn’t the correct expansion (though you might hear about Dynamic DNS in related contexts, it’s not the expansion of DNS).

DNS stands for Domain Name System. This naming framework translates readable domain names like example.com into the IP addresses computers use to locate servers on the Internet. The word “System” signals that DNS is an organized, distributed architecture—composed of databases, root servers, authoritative servers, and resolvers—that works together to resolve names, not just a single service.

The other options miss the established term: Domain Name Service would imply a Service rather than the full system, Digital Network System isn’t the recognized name for this function, and Dynamic Name System isn’t the correct expansion (though you might hear about Dynamic DNS in related contexts, it’s not the expansion of DNS).