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What is difference between UDP and TCP? where are we use UDP and TCP?

Originally Posted by lalitkumar553

What is difference between UDP and TCP? where are we use UDP and TCP?

DIFFERENCE BETWEEN UDP AND TCP

UDP - User Datagram Protocol.

TCP - Transmission Control Protocol.


-> Both the protocols are used for transferring the data in the Internet.

-> The main difference between UDP and TCP is reliability and security level applied in both protocols.

-> TCP is basically reliable and more secured because it confirms that the information is reached successfully in the other end by receiving a acknowledgement.

-> While UDP is not reliable and less secured as there is no acknowledgement received in the other end but it just focus on the data transfer alone.

-> UDP is more time saving when compared to TCP but not reliable and secure.

-> Any more queries, feel free to leave a post in our forum...

Both TCP and UDP work at transport layer TCP/IP model, but have very different usage.

The most important differences are:

* Reliability:
TCP: connection-oriented
UDP: connectionless
* Ordered:
TCP: order of message receipt is guaranteed
UDP: order is not guaranteed
* Protocol weight:
TCP: heavyweight, because of the connection/ordering overhead
UDP: lightweight, very few overhead
* Packets:
TCP: streaming, data is read as a "stream," with nothing distinguishing where one packet ends and another begins. There may be multiple packets per read call.
UDP: datagrams, one packet per one read call.