Hi guys, I was doing some homework and I got stuck on this question, can anyone help me out?

For communication between remote processes / end points:

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A) A 16-bit TSAP is an integral part of a socket-pair-address specified for both the source host and the destination host

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B) For the operating systems of both remote hosts it will be sufficient to associate a 16-bit logical port number to each remote process, without the need for anything else

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C) The source and destination hosts must always use sockets to avoid IP multiplexing