1. What is a short-term scheduler?

Answer. It selects which process has to be executed next and allocates CPU

2. The primary distinction between the short term scheduler and the long term scheduler is ?

Answer. The frequency of their execution

3. The only state transition that is initiated by the user process itself is ?

Answer. block

4. In a time-sharing operating system, when the time slot given to a process is completed, the process goes from the running state to the ...................

Answer. Ready state

5. In a multiprogramming environment more than one process resides in the memory true or false ?

Answer. true

6. Suppose that a process is in "Blocked" state waiting for some I/O service. When the service is completed, it goes to the ..................

Answer. Ready state

7. In the non blocking send

Answer. the sending process sends the message and resumes operation

8. In the Zero capacity queue

Answer. the sender blocks until the receiver receives the message

9. The Zero Capacity queue

Answer. is referred to as a message system with no buffering

10. Bounded capacity and Unbounded capacity queues are referred to as

Answer. Automatic buffering

11. Remote Procedure Calls are used

Answer. for communication between two processes on separate systems

12. To differentiate the many network services a system supports are used.

Answer. Ports

13. Which facility dynamically adds probes to a running system, both in user processes and in the kernel?

Answer. DTrace

14. Which one of the following is not a real time operating system?

Answer. Palm OS

15. The OS X has ____________

Answer. hybrid kernel