TCP (Transmission Control Protocol)
UDP (User Datagram Protocol)
It is a heavy weight protocol
It is a light weight protocol
Connection-oriented (uses a 3-way handshake to establish connection, 4-way handshake to close as acknowledgement
Connectionless (no handshake)
Ensures reliable delivery of data(checks error and retransmits the lost packets)
Unreliable delivery (no retransmission)
Uses fixed windowing and sliding windowing for congestion and flow control
No flow control or congestion control
Slower due to reliability mechanisms
Fast data transmission
Segments data and ensures ordered delivery
Sends datas independently without any order.
Web browsing (HTTP/HTTPS), File transfer (FTP), Email (SMTP, IMAP, POP3)
Online gaming, Video streaming, VoIP, DNS queries
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