This video compares and contrasts TCP (Transmission Control Protocol) and UDP (User Datagram Protocol), two fundamental protocols for computer communication. It explains how TCP ensures reliable data delivery, while UDP prioritizes speed over guaranteed delivery.
TCP (Transmission Control Protocol): A connection-oriented protocol that establishes a session between communicating computers using a three-way handshake (SYN, ACK, ACK). It guarantees data delivery and order, resending lost packets. It's slower but more reliable, suitable for applications needing data integrity (web pages, file downloads).
UDP (User Datagram Protocol): A connectionless protocol that doesn't establish sessions or guarantee delivery. It's faster than TCP because of reduced overhead but sacrifices reliability. Known as "fire-and-forget," it's suitable for applications where speed is prioritized over guaranteed delivery (e.g., streaming).
Key Differences: TCP is connection-oriented, reliable, and slower; UDP is connectionless, unreliable, and faster. The choice depends on the application's needs for speed versus reliability.
Three-way Handshake: TCP uses a three-way handshake (SYN, ACK, ACK) to establish a connection before data transmission.
Data Delivery: TCP guarantees data delivery and order; UDP does not.
