Which of the following is responsible for internet domain names into corresponding IP address?

The correct answer is Option 3) DNS.

Key Points

• DNS (Domain Name System) is a hierarchical and decentralized naming system used to resolve human-readable domain names (like www.example.com) into machine-readable IP addresses (like 93.184.216.34).
• This process is essential for locating and addressing devices and services across the internet.
• Without DNS, users would need to remember IP addresses instead of easy-to-remember domain names.
• Example: When you enter www.google.com in your browser, DNS resolves it to the corresponding IP address of Google's server so your browser can connect to it.

Additional Information

• Option 1 – HTTP: HyperText Transfer Protocol defines how data is transmitted between a web server and a client (browser), not for domain resolution.
• Option 2 – WWW: The World Wide Web is a system of interlinked hypertext documents accessed via the internet, but it is not responsible for translating domain names.
• Option 4 – ICMP: Internet Control Message Protocol is used for network diagnostics and error reporting (e.g., ping), not for resolving domain names.
• DNS Components:
  • Resolver: Client-side component that initiates the DNS query
  • Root Servers: Handle requests for top-level domains
  • TLD Servers: Manage domains like .com, .org, .edu
  • Authoritative Servers: Hold the actual IP address mappings