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PRIMITIVES means operations.A service in a computer network consists of a set of primitives.The primitives are to be used by the user to access the service.The primitives asks the service to do some action or to report on an action.The primitives are system calls.The primitives varies for different services.The following are some of the primitives used in a computer network.
LISTEN means the block is waiting for an incoming connection.
CONNECT means to establish a connection.
RECEIVE means the block is waiting for an incoming message.
SEND means to send a message.
DISCONNECT means to terminate a connection.
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