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MCQs

Total Questions : 34 | Page 3 of 4 pages
Question 21. What is a long-term scheduler ?
  1.    It selects which process has to be brought into the ready queue
  2.    It selects which process has to be executed next and allocates CPU
  3.    It selects which process to remove from memory by swapping
  4.    None of these
 Discuss Question
Answer: Option A. -> It selects which process has to be brought into the ready queue


None.


Question 22. If all processes I/O bound, the ready queue will almost always be ______, and the Short term Scheduler will have a ______ to do.
  1.    full,little
  2.    full,lot
  3.    empty,little
  4.    empty,lot
 Discuss Question
Answer: Option C. -> empty,little


None.


Question 23. The primary distinction between the short term scheduler and the long term scheduler is :
  1.    The length of their queues
  2.    The type of processes they schedule
  3.    The frequency of their execution
  4.    None of these
 Discuss Question
Answer: Option C. -> The frequency of their execution


None.


Question 24. What is a medium-term scheduler ?
  1.    It selects which process has to be brought into the ready queue
  2.    It selects which process has to be executed next and allocates CPU
  3.    It selects which process to remove from memory by swapping
  4.    None of these
 Discuss Question
Answer: Option C. -> It selects which process to remove from memory by swapping


None.


Question 25. What is a short-term scheduler ?
  1.    It selects which process has to be brought into the ready queue
  2.    It selects which process has to be executed next and allocates CPU
  3.    It selects which process to remove from memory by swapping
  4.    None of these
 Discuss Question
Answer: Option B. -> It selects which process has to be executed next and allocates CPU


None.


Question 26. The entry of all the PCBs of the current processes is in :
  1.    Process Register
  2.    Program Counter
  3.    Process Table
  4.    Process Unit
 Discuss Question
Answer: Option C. -> Process Table


None.


Question 27. The degree of multi-programming is :
  1.    the number of processes executed per unit time
  2.    the number of processes in the ready queue
  3.    the number of processes in the I/O queue
  4.    the number of processes in memory
 Discuss Question
Answer: Option D. -> the number of processes in memory


None.


Question 28. Which of the following do not belong to queues for processes ?
  1.    Job Queue
  2.    PCB queue
  3.    Device Queue
  4.    Ready Queue
 Discuss Question
Answer: Option A. -> Job Queue


None.


Question 29. When the process issues an I/O request :
  1.    It is placed in an I/O queue
  2.    It is placed in a waiting queue
  3.    It is placed in the ready queue
  4.    It is placed in the Job queue
 Discuss Question
Answer: Option A. -> It is placed in an I/O queue


None.


Question 30. A single thread of control allows the process to perform :
  1.    only one task at a time
  2.    multiple tasks at a time
  3.    All of these
 Discuss Question
Answer: Option A. -> only one task at a time


None.


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