Which process maps a domain name to an IP address?

Which process maps a domain name to an IP address?

• A. DNS resolution maps domain names to email addresses.
• B. DNS resolution maps domain names to hostnames.
• C. DNS resolution uses the IP protocol to fetch emails.
• D. DNS resolution maps domain names to IP addresses.

Answer: (D)

DNS resolution translates a human-friendly domain name into the numerical IP address that computers use to locate a destination on the Internet. When you type a domain, your device asks a DNS resolver, which checks through a hierarchy of DNS servers (root, then top-level domain, then authoritative servers for that domain) to find the IP associated with that domain. Once the IP is returned, your browser can connect to that address and load the site. This mapping is essential because routing on the Internet relies on IP addresses, not readable names. The other ideas don’t fit because DNS isn’t used to map domain names to email addresses, and it isn’t about producing another hostname. It also isn’t a method for fetching emails itself; email delivery uses protocols like SMTP, while DNS helps locate the mail servers by providing their IPs.

DNS resolution translates a human-friendly domain name into the numerical IP address that computers use to locate a destination on the Internet. When you type a domain, your device asks a DNS resolver, which checks through a hierarchy of DNS servers (root, then top-level domain, then authoritative servers for that domain) to find the IP associated with that domain. Once the IP is returned, your browser can connect to that address and load the site. This mapping is essential because routing on the Internet relies on IP addresses, not readable names.

The other ideas don’t fit because DNS isn’t used to map domain names to email addresses, and it isn’t about producing another hostname. It also isn’t a method for fetching emails itself; email delivery uses protocols like SMTP, while DNS helps locate the mail servers by providing their IPs.