Which statement best describes the Domain Name System (DNS)?

Which statement best describes the Domain Name System (DNS)?

• A. The domain name system associates domain names with IP addresses.
• B. DNS provides encryption for web traffic.
• C. DNS routes data packets between networks.
• D. DNS assigns port numbers to applications.

Answer: (A)

The Domain Name System is all about turning human-friendly names into machine addresses. Computers use IP addresses to locate servers, but people remember domain names like example.com. DNS acts like a phone book for the internet, mapping each domain name to the numeric IP address where its site lives. When you type a domain, your device asks a DNS resolver to find the corresponding IP, which involves checking a hierarchy of DNS servers until the correct address is found and returned so your browser can connect. Encryption for web traffic is handled by HTTPS and TLS, not by DNS. Routing data packets between networks is the job of routers and the network layer, not DNS. Port numbers are part of the transport layer and are assigned by applications/protocols, not by DNS.

The Domain Name System is all about turning human-friendly names into machine addresses. Computers use IP addresses to locate servers, but people remember domain names like example.com. DNS acts like a phone book for the internet, mapping each domain name to the numeric IP address where its site lives. When you type a domain, your device asks a DNS resolver to find the corresponding IP, which involves checking a hierarchy of DNS servers until the correct address is found and returned so your browser can connect.

Encryption for web traffic is handled by HTTPS and TLS, not by DNS. Routing data packets between networks is the job of routers and the network layer, not DNS. Port numbers are part of the transport layer and are assigned by applications/protocols, not by DNS.