Why Does DNS Usually Use UDP Instead of TCP? | Networking #networking #network #dns

B. UDP 🎯

Explanation:

DNS queries are typically small and require quick responses. UDP (User Datagram Protocol) is preferred because it:

Has low overhead
Does not require connection establishment
Provides faster communication for simple request-response transactions

DNS commonly uses:

UDP Port 53 for standard queries
TCP Port 53 for zone transfers and large DNS responses

Example:

When you type google.com in a browser, your device sends a DNS query using UDP Port 53 to quickly resolve the domain name into an IP address.

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