Which statement best describes DNS servers’ role?

• A. They facilitate the name resolution process for domain names
• B. They host web content
• C. They manage email filtering
• D. They assign IP addresses to hosts

Answer: (A)

DNS servers resolve domain names to IP addresses, enabling devices to reach the correct hosts on the network. When you type a domain, your device asks a DNS resolver to translate that name into the numeric address the network uses. The resolver may fetch the answer from caches or query a hierarchy of servers (root, top-level domain, and authoritative servers) until it returns the IP to your client, which then connects to the target host. Caching speeds up future lookups and reduces load on the system by avoiding repeated queries.

Hosting web content happens on web servers that store and serve webpages, not on DNS servers. Email filtering is handled by mail servers or security gateways, though DNS can guide where mail should be sent via MX records. Assigning IP addresses to hosts is done by DHCP, not DNS. DNS’s sole job is translating names to addresses so traffic can be directed correctly.