[amp_mcq option1=”lengthened; shortened” option2=”shortened; lengthened” option3=”shortened; shortened” option4=”lengthened; lengthened E. None of the above” correct=”option2″]
The correct answer is: B. shortened; lengthened.
Under multiprogramming, turnaround time for short jobs is usually shortened because they can be executed more quickly when they are not waiting for the CPU to become available. Long jobs, on the other hand, may take slightly longer to complete because they have to share the CPU with other jobs.
Here is a more detailed explanation of each option:
- Option A: lengthened; shortened. This is incorrect because turnaround time for short jobs is usually shortened, not lengthened.
- Option B: shortened; lengthened. This is the correct answer because turnaround time for short jobs is usually shortened, while turnaround time for long jobs may take slightly longer to complete.
- Option C: shortened; shortened. This is incorrect because turnaround time for long jobs may take slightly longer to complete.
- Option D: lengthened; lengthened. This is incorrect because turnaround time for short jobs is usually shortened, not lengthened.
- Option E: None of the above. This is incorrect because option B is the correct answer.