What does DNS do?

• A. It translates domain names to IP addresses, enabling easier access to resources.
• B. It routes email between servers.
• C. It encrypts web traffic.
• D. It assigns IP addresses to devices dynamically.

Answer: (A)

DNS translates domain names to IP addresses, enabling easier access to resources. Humans remember names, not numbers, so when you type a site like example.com, DNS looks up the numerical address that computers use to reach that server. This mapping is what lets browsers connect correctly and load the right site. The other functions described belong to different technologies: routing email between servers is handled by mail protocols (with DNS aiding by providing MX records, but not the act of routing itself), encrypting web traffic is done with TLS/SSL, and assigning IP addresses dynamically is done by DHCP. So translating names to addresses is the key role that makes accessing resources by name possible.