The process of resolving human-friendly hostnames to IP addresses is performed by which service?

The process of resolving human-friendly hostnames to IP addresses is performed by which service?

• A. DNS
• B. DHCP
• C. LDAP
• D. SMB

Answer: (A)

Resolving human-friendly hostnames to IP addresses is done by the Domain Name System (DNS). DNS translates names like example.com into numeric IP addresses that computers use to locate services. When a device needs an address, it asks a DNS resolver, which may query up the chain—from root servers to top‑level domain servers to authoritative name servers—until it obtains the IP. The result is then cached to speed future lookups. This naming system allows you to connect to services by their names rather than remembering numbers. Other options play different roles: DHCP assigns IP addresses and network configuration; LDAP is a directory service for querying user and resource data; SMB is a file-sharing protocol. So DNS is the service that performs hostname-to-IP resolution.

Resolving human-friendly hostnames to IP addresses is done by the Domain Name System (DNS). DNS translates names like example.com into numeric IP addresses that computers use to locate services. When a device needs an address, it asks a DNS resolver, which may query up the chain—from root servers to top‑level domain servers to authoritative name servers—until it obtains the IP. The result is then cached to speed future lookups. This naming system allows you to connect to services by their names rather than remembering numbers. Other options play different roles: DHCP assigns IP addresses and network configuration; LDAP is a directory service for querying user and resource data; SMB is a file-sharing protocol. So DNS is the service that performs hostname-to-IP resolution.