Can you explain how the DNS system works and how it converts domain names into IP addresses?
sobes.tech AI
Answer from AI
DNS (Domain Name System) is a distributed system that translates domain names (e.g., example.com) into IP addresses understandable by network devices.
How it works:
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Client request: When you enter a domain name in your browser, the system sends a DNS query to the local DNS server (usually your provider's).
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Recursive search: If the local server doesn't know the IP, it sends a request to the root DNS servers, which redirect to top-level domain (TLD) servers — for example, for .com.
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Authoritative server: The TLD server redirects the request to the authoritative DNS server for the specific domain, which knows the exact IP.
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Response: The IP address is returned back through the chain to the client.
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Caching: To speed up subsequent requests, results are cached at various levels.
Example: for example.com, the request goes to the root server → the .com server → the example.com server, which returns the IP.
Thus, DNS allows the use of friendly names instead of numeric IPs, providing convenience and scalability for the internet.