Which description best captures the DNS function?

Which description best captures the DNS function?

• A. It assigns MAC addresses
• B. It delivers email
• C. It stores web pages
• D. It translates domain names into IP addresses

Answer: (D)

DNS maps human-readable domain names to the numeric IP addresses computers use to reach resources on a network. When you type a domain into a browser, a DNS query resolves that name to an IP address, enabling the browser to connect to the correct server. Without this translation, you’d need to know the numeric address of every site. This is the function described by the option that best captures DNS: translating domain names into IP addresses. Other options describe different network roles—assigning MAC addresses is a hardware-layer task, delivering email involves mail servers and protocols, and storing web pages is the job of web hosting, not the DNS.

DNS maps human-readable domain names to the numeric IP addresses computers use to reach resources on a network. When you type a domain into a browser, a DNS query resolves that name to an IP address, enabling the browser to connect to the correct server. Without this translation, you’d need to know the numeric address of every site. This is the function described by the option that best captures DNS: translating domain names into IP addresses. Other options describe different network roles—assigning MAC addresses is a hardware-layer task, delivering email involves mail servers and protocols, and storing web pages is the job of web hosting, not the DNS.