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Welcome to the Page Replacement Algorithms MCQs Page

Dive deep into the fascinating world of Page Replacement Algorithms with our comprehensive set of Multiple-Choice Questions (MCQs). This page is dedicated to exploring the fundamental concepts and intricacies of Page Replacement Algorithms, a crucial aspect of Operating System. In this section, you will encounter a diverse range of MCQs that cover various aspects of Page Replacement Algorithms, from the basic principles to advanced topics. Each question is thoughtfully crafted to challenge your knowledge and deepen your understanding of this critical subcategory within Operating System.

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Check out the MCQs below to embark on an enriching journey through Page Replacement Algorithms. Test your knowledge, expand your horizons, and solidify your grasp on this vital area of Operating System.

Note: Each MCQ comes with multiple answer choices. Select the most appropriate option and test your understanding of Page Replacement Algorithms. You can click on an option to test your knowledge before viewing the solution for a MCQ. Happy learning!

Page Replacement Algorithms MCQs | Page 1 of 4

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Q1.
The problem of thrashing is effected scientifically by ________.

a.

Program structure

b.

Program size

c.

Primary storage size

d.

None of the above

Discuss
Answer: (a).Program structure
Q2.
_________ allocates the largest hole (free fragment) available in the memory.

a.

Best Fit

b.

Worst Fit

c.

First Fit

d.

None of the above

Discuss
Answer: (b).Worst Fit
Q3.
If all page frames are initially empty, and a process is allocated 3 page frames in real memory and references its pages in the order 1 2 3 2 4 5 2 3 2 4 1 and the page replacement is FIFO, the total number of page faults caused by the process will be __________.

a.

10

b.

7

c.

8

d.

9

Discuss
Answer: (d).9
Q4.
Replace the page that will not be used for the longest period of time. This principle is adopted by ____________.

a.

FIFO Page replacement algorithm

b.

Optimal Page replacement algorithm

c.

Round robin scheduling algorithm

d.

SCAN scheduling algorithm

Discuss
Answer: (c).Round robin scheduling algorithm
Q5.
A page fault occurs

a.

when the page is not in the memory

b.

when the page is in the memory

c.

when the process enters the blocked state

d.

when the process is in the ready state

Discuss
Answer: (a).when the page is not in the memory
Q6.
Reference bit is used for

a.

Implementing LRU page replacement algorithm

b.

Implementing NRU algorithm

c.

To check the page table entry in the cache memory

d.

none of above

Discuss
Answer: (b).Implementing NRU algorithm
Q7.
The LRU algorithm

a.

pages out pages that have been used recently

b.

pages out pages that have not been used recently

c.

pages out pages that have been least used recently

d.

pages out the first page in a given area

Discuss
Answer: (c).pages out pages that have been least used recently
Q8.
Operating system supports different page replacement policy. From the given below option which is not a valid page replacement policy?

a.

Least Recently Used

b.

First in first out

c.

Currently used policy

d.

Optimal page replacement policy

Discuss
Answer: (c).Currently used policy
Q9.
In which of the following page replacement policies Belady’s anomaly occurs?

a.

Most recently used.

b.

LRU

c.

FIFO

d.

Optimal page replacement policy.

Discuss
Answer: (c).FIFO
Q10.
The optimal page replacement algorithm will select the page that

a.

has been used least number of times.

b.

has been used most number of times.

c.

has been used for the longest time in the past.

d.

will not be used for the longest time in future.

Discuss
Answer: (d).will not be used for the longest time in future.
Page 1 of 4

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