What is the purpose of the DNS system?

• A. To match human-readable domain names with the server's IP address
• B. To provide email delivery services
• C. To route traffic between networks
• D. To secure user passwords

Answer: (A)

The DNS is the naming system that makes Internet addresses user-friendly by turning human-readable domain names into the numeric IP addresses computers use to locate services. When you type a domain, your device asks a DNS resolver to find the corresponding IP. The resolver checks from caches and, if needed, queries root servers, then top-level domain servers, and finally authoritative name servers until it gets the address back. This mapping lets browsers reach the correct server without you remembering strings of numbers. Without DNS, you’d have to memorize IPs for every site.

This isn’t about delivering email, routing entire networks, or storing user passwords. DNS can carry records that assist with email routing (like MX records), but its core purpose remains translating names to addresses, enabling easy access to services.