CCP Process & Memory Management 3

Question 1

What condition is NOT required for deadlock to occur?

Accepted Answer

Preemption allowed

Answer

Deadlock requires mutual exclusion, hold-and-wait, no preemption, and circular wait; allowing preemption prevents deadlock.

Question 2

In segmentation-based memory management, what does each segment descriptor typically contain?

Accepted Answer

A base address and limit (length)

Answer

A segment descriptor stores the base (starting physical address) and limit (size) of the segment.

Question 3

Which scheduling metric measures the total time from process submission to completion?

Accepted Answer

Turnaround time

Answer

Turnaround time is the elapsed time from job submission to job completion, including waiting and execution.

Question 4

What is the primary advantage of using a multi-level page table over a single-level page table?

Accepted Answer

Reduced memory overhead for sparse address spaces

Answer

Multi-level page tables avoid allocating page table entries for unmapped regions, saving memory for sparse address spaces.

Question 5

What does the term 'working set' refer to in virtual memory management?

Accepted Answer

The set of pages a process actively uses during a time window

Answer

The working set is the collection of pages a process has referenced within a recent time window, used to guide page replacement.

(CCP) Certified Computing Professional Practice Test