What are the advantages and disadvantages for connection oriented and connection less?

ConnectionlessData can be sent immediately without the overhead of setting up a connectionNo intrinsic flow control No intrinsic error correctionIt is robust against link failuresForwarding is based on full destination addressThe network switches do not need to maintain connectionsOrder of packets is not guaranteed

There can be wide variation in the delayConnection- orientedFlow control can be implemented within the serviceOverhead of setting up a connection before data is sentError control can be implemented within the serviceSwitches have to maintain connectionsOrder of packets is maintained

Forwarding is done according to simple connection identifiers

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