Operating System Questions and Answers MCQ – Inter Process Communication

This set of Operating System Multiple Choice Questions & Answers (MCQs) focuses on “Inter Process Communication”.

1. What is Inter process communication?
a) allows processes to communicate and synchronize their actions when using the same address space
b) allows processes to communicate and synchronize their actions without using the same address space
c) allows the processes to only synchronize their actions without communication
d) none of the mentioned

2. Message passing system allows processes to __________
a) communicate with one another without resorting to shared data
b) communicate with one another by resorting to shared data
c) share data
d) name the recipient or sender of the message

3. Which of the following two operations are provided by the IPC facility?
a) write & delete message
b) delete & receive message
c) send & delete message
d) receive & send message

4. Messages sent by a process __________
a) have to be of a fixed size
b) have to be a variable size
c) can be fixed or variable sized
d) None of the mentioned

5. The link between two processes P and Q to send and receive messages is called __________
a) communication link
b) message-passing link
c) synchronization link
d) all of the mentioned

6. Which of the following are TRUE for direct communication?
a) A communication link can be associated with N number of process(N = max. number of processes supported by system)
b) A communication link can be associated with exactly two processes
c) Exactly N/2 links exist between each pair of processes(N = max. number of processes supported by system)
d) Exactly two link exists between each pair of processes

7. In indirect communication between processes P and Q __________
a) there is another process R to handle and pass on the messages between P and Q
b) there is another machine between the two processes to help communication
c) there is a mailbox to help communication between P and Q
d) none of the mentioned

8. In the non blocking send __________
a) the sending process keeps sending until the message is received
b) the sending process sends the message and resumes operation
c) the sending process keeps sending until it receives a message
d) none of the mentioned

9. In the Zero capacity queue __________
a) the queue can store at least one message
b) the sender blocks until the receiver receives the message
c) the sender keeps sending and the messages don’t wait in the queue
d) none of the mentioned

10. The Zero Capacity queue __________
a) is referred to as a message system with buffering
b) is referred to as a message system with no buffering
c) is referred to as a link
d) none of the mentioned

11. Bounded capacity and Unbounded capacity queues are referred to as __________
a) Programmed buffering
b) Automatic buffering
c) User defined buffering
d) No buffering

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