If no process is suspended, the signal operation _______

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Question:
If no process is suspended, the signal operation _______

1.puts the system into a deadlock state

2. suspends some default process execution

3.nothing happens

4.the output is unpredictable

Posted Date:-2022-03-25 08:47:50

More MCQS Questions and answers

  1. A collection of instructions that performs a single logical function is called ________
  2. In the write ahead logging a _______ is maintained.
  3. To avoid deadlock ________
  4. What is a reusable resource?
  5. Which one of the following is the deadlock avoidance algorithm?
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  7. A locking protocol is one that ______
  8. A monitor is a type of _________
  9. A monitor is characterized by ______
  10. A problem encountered in multitasking when a process is perpetually denied necessary resources is called _______
  11. A procedure defined within a ________ can access only those variables declared locally within the _______ and its formal parameters.
  12. A system is in the safe state if _____
  13. A terminated transaction that has completed its execution successfully is _____ otherwise it is ______
  14. All processes share a semaphore variable mutex, initialized to 1. Each process must execute wait(mutex) before entering the critical section and signal(mutex) afterward. Suppose a process executes in the following manner. wait(mutex); ..... critical section ..... wait(mutex);
  15. An actual update is not allowed to a data item ______
  16. An un-interruptible unit is known as ________
  17. Consider a transaction T1 that committed prior to checkpoint. The <T1 commits> record appears in the log before the <checkpoint> record. Any modifications made by T1 must have been written to the stable storage either with the checkpoint or prior to it. Thus at recovery time ______
  18. Deadlock prevention is a set of methods ______
  19. For a deadlock to arise, which of the following conditions must hold simultaneously?
  20. For a Hold and wait condition to prevail _____
  21. For Mutual exclusion to prevail in the system ______
  22. For non sharable resources like a printer, mutual exclusion _____
  23. For sharable resources, mutual exclusion _______
  24. If no process is suspended, the signal operation _______
  25. In the bounded buffer problem _________
  26. In the bounded buffer problem, there are the empty and full semaphores that _____
  27. Serializable schedules are ones where _____
  28. The bounded buffer problem is also known as _____
  29. The circular wait condition can be prevented by ______
  30. The dining – philosophers problem will occur in case of ________
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  32. The growing phase is a phase in which?
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  34. The number of resources requested by a process _____
  35. The request and release of resources are _______
  36. The shrinking phase is a phase in which?
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  39. The two phase locking protocol consists of ______
  40. The undo and redo operations must be _________ to guarantee correct behaviour, even if a failure occurs during recovery process.
  41. To ensure difficulties do not arise in the readers – writers problem _______ are given exclusive access to the shared object.
  42. To ensure that the hold and wait condition never occurs in the system, it must be ensured that ________
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  44. What are the operations that can be invoked on a condition variable?
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