You are coding a multi-threaded server in which n detached threads will listen on n ports with a permanent one-to-one association between threads and ports during the lifetime of the process. You want to uniquely identify each thread-port pair. To do so you:

may use either thread-id or port number

must use both thread-id and port number

can use thread-id but not port number

can use port number but not thread-id

Answer:
may use either thread-id or port number

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