Networking (TCP/IP, DNS, DHCP) · question
Q.02 of 52
Explain the difference between TCP and UDP protocols.
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Answer: TCP (Transmission Control Protocol) and UDP (User Datagram Protocol) are transport layer protocols with key differences:
TCP:
- Connection-oriented (requires handshake)
- Reliable delivery with error checking
- Flow control and congestion control
- Ordered packet delivery
- Higher overhead
- Used for: HTTP, HTTPS, FTP, SSH
UDP:
- Connectionless protocol
- No guarantee of delivery
- No flow control or error recovery
- Faster with lower overhead
- Used for: DNS queries, DHCP, streaming media, gaming
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