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Differentiate between TCP and UDP.

written 6.9 years ago by dhwaniket.kamble • 90

modified 2.8 years ago by binitamayekar ★ 6.7k

computer networks

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written 2.8 years ago by Krishna_Agrawal • 2.7k

Difference between TCP and UDP Models : -

Sr.No	Topic	TCP	UDP
1	Meaning	TCP stands for Transmission Control Protocol	UDP stands for User Datagram Protocol
2	Definition	It is a communications protocol, using which the data is transmitted between systems over the network. In this, the data is transmitted into the form of packets.	It is same as the TCP protocol except this doesn’t guarantee the error-checking and data recovery.
3	Connection status	Requires an established connection to transmit data (connection should be closed once transmission is complete)	Connectionless protocol with no requirements for opening, maintaining, or terminating a connection
4	Data sequencing	Able to sequence.	Unable to sequence.
5	Design	TCP is a connection oriented protocol.	UDP is a connection less protocol.
6	Guaranteed delivery	It can guarantee delivery of data to the destination router	It cannot guarantee delivery of data to the destination
7	Header Size	The size of TCP is 20 bytes.	The size of the UDP is 8 bytes.
8	Retransmission of data	Retransmission of lost packets is possible	No retransmission of lost packets
9	Error checking	Extensive error checking and acknowledgment of data	Basic error checking mechanism using checksums
10	Method of transfer	Data is read as a byte stream; messages are transmitted to segment boundaries	UDP packets with defined boundaries; sent individually and checked for integrity on arrival
11	Speed	Slower than UDP	Faster than TCP
12	Broadcasting	Does not support Broadcasting	Does support Broadcasting
13	Optimal Use	Used by HTTPS, HTTP, SMTP, POP, FTP, etc	Video conferencing, streaming, DNS, VoIP, etc
14	Applications	This protocol is mainly used where a secure and reliable communication process is required, like military services, web browsing, and e-mail.	This protocol is used where fast communication is required and does not care about the reliability like VoIP, game streaming, video and music streaming, etc.

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