What is the primary function of DNS?

What is the primary function of DNS?

• A. Provide hostnames to devices
• B. Encrypt data in transit
• C. Resolve domain names to IP addresses
• D. Assign IP addresses to hosts

Answer: (C)

DNS is all about translating human-friendly domain names into the numeric IP addresses computers use to reach services. When you type a domain, your device asks a DNS resolver to look up the corresponding IP, and once it gets that address, it can connect to the right server. This function of resolving names to addresses is what allows you to access websites without remembering numbers. It’s not about encrypting data in transit (that’s encryption protocols like TLS), not about assigning IPs (that’s DHCP), and while hostnames are part of DNS records, DNS’s primary purpose isn’t to provide hostnames to devices.

DNS is all about translating human-friendly domain names into the numeric IP addresses computers use to reach services. When you type a domain, your device asks a DNS resolver to look up the corresponding IP, and once it gets that address, it can connect to the right server. This function of resolving names to addresses is what allows you to access websites without remembering numbers. It’s not about encrypting data in transit (that’s encryption protocols like TLS), not about assigning IPs (that’s DHCP), and while hostnames are part of DNS records, DNS’s primary purpose isn’t to provide hostnames to devices.