Question

What is the difference between reliable protocol and unreliable protocol?

Answer 1

Answer:

Transmission Control Protocol (TCP), the main protocol used on the Internet, is a reliable unicast protocol

Reliable protocol implies the Protocol provides assurance of the delivery of data to the intended recipient(s), as opposed to an unreliable protocol, which does not provide notifications to the sender as to the delivery of transmitted data or messages.

Answer 2

Answer:

Difference

Explanation:-

Reliable-

End stations running reliable protocols will work together to verify the transmission of data to ensure accuracy and integrity of the data. A reliable system will set up a connection and verify that: all data transmitted is controlled in an orderly fashion, is received in the correct order and is intact. Reliable protocols work best over physical medium that loses data, and is prone to errors. The error correction, ordering and verification mechanisms require overhead in the data packets and increase the total amount of bandwidth required to transmit data. Transmission Control Protocol (TCP) is a typical reliable protocol.

Unreliable-

Unreliable protocols make no effort to set up a connection, they don't check to see if the data was received and usually don't make any provisions for recovering from errors or lost data. Unreliable protocols work best over physical medium with low loss and low error rates. User Datagram Protocol (UDP) is an example of an unreliable protocol. UDP makes no provisions for verifying whether data arrived or is intact. However, UDP adds a minimum of overhead when compared to TCP and is thus much faster for data transfers over high quality physical links that are high speed.

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