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Welcome to the Operating System MCQs Page

Dive deep into the fascinating world of Operating System with our comprehensive set of Multiple-Choice Questions (MCQs). This page is dedicated to exploring the fundamental concepts and intricacies of Operating System, a crucial aspect of GATE CSE Exam. In this section, you will encounter a diverse range of MCQs that cover various aspects of Operating System, 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 GATE CSE Exam.

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

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

Operating System MCQs | Page 4 of 16

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Q31.
Dynamic linking can cause security concerns because:

a.

Security is dynamic

b.

The path for searching dynamic libraries is not known till runtime

c.

Linking is insecure

d.

Crytographic procedures are not available for dynamic linking

Discuss
Answer: (b).The path for searching dynamic libraries is not known till runtime
Q32.
Which of the following statements is false?

a.

Virtual memory implements the translation of a program‘s address space into physical memory address space

b.

Virtual memory allows each program to exceed the size of the primary memory

c.

Virtual memory increases the degree of multiprogramming

d.

Virtual memory reduces the context switching overhead

Discuss
Answer: (d).Virtual memory reduces the context switching overhead
Q33.
The process of assigning load addresses to the various parts of the program and adjusting the code and date in the program to reflect the assigned addresses is called

a.

Assembly

b.

Parsing

c.

Relocation

d.

Symbol resolution

Discuss
Answer: (c).Relocation
Q34.
Consider a virtual memory system with FIFO page replacement policy. For an arbitrary page access pattern, increasing the number of page frames in main memory will

a.

always decrease the number of page faults

b.

always increase the number of page faults

c.

sometimes increase the number of page faults

d.

never affect the number of page faults

Discuss
Answer: (c).sometimes increase the number of page faults
Q35.
Consider a machine with 64 MB physical memory and a 32-bit virtual address space. If the page size is 4KB, what is the approximate size of the page table?

a.

16 MB

b.

8 MB

c.

2 MB

d.

24 MB

Discuss
Answer: (c).2 MB
Q36.
Suppose the time to service a page fault is on the average 10 milliseconds, while a memory access takes 1 microsecond. Then a 99.99% hit ratio results in average memory access time of

a.

1.9999 milliseconds

b.

1 millisecond

c.

9.999 microseconds

d.

1.9999 microseconds

Discuss
Answer: (d).1.9999 microseconds
Q37.
Consider a system with byte-addressable memory, 32 bit logical addresses, 4 kilobyte page size and page table entries of 4 bytes each. The size of the page table in the system in megabytes is

a.

2

b.

4

c.

8

d.

16

Discuss
Answer: (b).4
Q38.
A computer system implements a 40 bit virtual address, page size of 8 kilobytes, and a 128-entry translation look-aside buffer (TLB) organized into 32 sets each having four ways. Assume that the TLB tag does not store any process id. The minimum length of the TLB tag in bits is _________

a.

20

b.

10

c.

11

d.

22

Discuss
Answer: (d).22
Q39.
Consider six memory partitions of size 200 KB, 400 KB, 600 KB, 500 KB, 300 KB, and 250 KB, where KB refers to kilobyte. These partitions need to be allotted to four processes of sizes 357 KB, 210 KB, 468 KB and 491 KB in that order. If the best fit algorithm is used, which partitions are NOT allotted to any process?

a.

200 KB and 300 KB

b.

200 KB and 250 KB

c.

250 KB and 300 KB

d.

300 KB and 400 KB

Discuss
Answer: (a).200 KB and 300 KB
Q40.
A Computer system implements 8 kilobyte pages and a 32-bit physical address space. Each page table entry contains a valid bit, a dirty bit three permission bits, and the translation. If the maximum size of the page table of a process is 24 megabytes, the length of the virtual address supported by the system is _______________ bits.

a.

36

b.

32

c.

28

d.

40

Discuss
Answer: (a).36
Page 4 of 16

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