What is the main purpose of the Domain Name System (DNS) in computer networks?

Subject: Computer Networks

Topic: OSI Layer Model

Options:

1. Option A: To encrypt network traffic
2. Option B: To map human-readable domain names to numerical IP addresses
3. Option C: To establish TCP connections between hosts
4. Option D: To assign dynamic IP addresses to client devices

Correct Answer:

Option B: To map human-readable domain names to numerical IP addresses

Explanation:

DNS acts as the phonebook of the Internet, translating human-friendly domain names (e.g., example.com) to machine-readable IP addresses.