What service translates URLs to IP addresses?

What service translates URLs to IP addresses?

• A. DHCP
• B. SMTP
• C. DNS
• D. FTP

Answer: (C)

DNS is the system that translates human-friendly domain names into numeric IP addresses so computers can find each other on the network. When you type a URL, your computer asks a DNS resolver to look up the corresponding IP address. The resolver may query root servers, top-level domain servers, and the domain’s authoritative server, using cached results to speed things up. Once the IP is known, your browser can connect to the correct server. Other services do different jobs: DHCP assigns IP addresses to devices on a local network; SMTP handles email delivery between servers; FTP is used for transferring files between a client and a server.

DNS is the system that translates human-friendly domain names into numeric IP addresses so computers can find each other on the network. When you type a URL, your computer asks a DNS resolver to look up the corresponding IP address. The resolver may query root servers, top-level domain servers, and the domain’s authoritative server, using cached results to speed things up. Once the IP is known, your browser can connect to the correct server.

Other services do different jobs: DHCP assigns IP addresses to devices on a local network; SMTP handles email delivery between servers; FTP is used for transferring files between a client and a server.