In non-blocking (asynchronous) send: The sending process sends the message and resumes operation,immediately.

Blocking (asynchronous) receive: The receiver retrieves either a valid message or a null and resumes operation, immediately.

➢ parent process may terminate its child using the .......... system call.

➢ A child process may output data to its parent using ............. system call.

A.............uses more of its time doing computations

One thread immediately terminates the target thread

• The link cannot have any messages waiting in ......................

Context switch time is pure overhead

in ................... the queue has finite length n; thus, at most n messages can reside in it

A ............. is an endpoint for communication

The context of a process is represented in its .....

Sockets identified by an............ concatenated with a ................

A *pair* of processes communicating employs a *pair* of sockets

A message-passing facility should provide at least one operations