Differentiate between TCP and UDP.

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written 7.8 years ago by

Sr.No	Characteristic/Description	UDP	TCP
1.	General Description	Simple, high-speed, low-functionality “wrapper ” that interfaces applications to the network layer and does little else	Full-Featured protocol that allows applications to send data reliably without worrying about the network layer issues.
2.	Protocol Connection Setup	Connectionless; data is sent without setup	Connection oriented; connection must be established prior to transmission
3.	Data interface to application	Message based; data is sent in discrete packages by the application	Stream based; data is sent by the application with no particular structure.
4.	Reliability and Acknowledgements	Unreliable; best effort delivery without acknowledgements	Reliable delivery of messages; all data acknowledged
5.	Re-transmissions	Not performed. Application must detect lost data and re-transmit if needed	Delivery of all data is managed and lost data is re-transmitted automatically
6.	Features Provided to manage flow of data	None	Flow control using sliding windows; window size adjustment heuristics; congestion avoidance algorithms.
7.	Overhead	Very low	Low, but higher than UDP
8.	Transmission speed	Very high	High, but not as high as UDP
9.	Data Quantity	Small to moderate amounts of data(up to few hundred bytes)	Small to very large amounts of data (up to gigabytes)
10.	Types of Application	Applications where data delivery speed matters more than completeness, where small amounts of data are sent; or where multicast/broadcast are used	Most protocols and applications sending data that must be received reliably, including most file and message transfer protocols
11.	Well-Known Applications and Protocols	Multimedia applications, DNS, BOOTP, DHCP, TFTP, SNMP, RIP	FTP, Telnet, DNS, SMTP, HTTP, POP, NNTP, BGP, IRC, IMAP

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