In indirect communication between processes P and Q :

• there is another process R to handle and pass on the messages between P and Q

• there is another machine between the two processes to help communication

• there is a mailbox to help communication between P and Q

• none of the mentioned

The link between two processes P and Q to send and receive messages is called :

• communication link

• message-passing link

• synchronization link

• all of the mentioned

Messages sent by a process :

• have to be of a fixed size

• have to be a variable size

• can be fixed or variable sized

• None of the mentioned

What is inter process communication?

• communication between two threads of same process

• Communication between two process

• None of the mentioned

• doesn't allow for communication

In the non blocking send :

• the sending process keeps sending until the message is received

• the sending process sends the message and resumes operation

• the sending process keeps sending until it receives a message

• none of the mentioned

In the Zero capacity queue :

• the queue can store at least one message

• the sender blocks until the receiver receives the message

• the sender keeps sending and the messages don’t wait in the queue

• none of the mentioned

What is operating system?

• collection of programs that manages hardware resources

• system service provider to the application programs

• link to interface the hardware and application programs

• all of the mentioned

A process can be terminated due to

• normal exit

• error

• abnormal exit

• all of the mentioned

The address of the next instruction to be executed by the current process is provided by the

• CPU registers

• Program counter

• Process stack

• Pipe

A Process Control Block(PCB) does not contain which of the following :

• registers

• Stack

• Bootstrap program

• Data