Operating System MCQ with Answers Set-2

This post contains a computer network related to 20 multiple-choice questions (OS SET-2) that help you to go through the subject and prepare you for operating system related questions in a competitive exam.

Operating System MCQ Test Series Set-2

Total Number of Questions: 20
Each question carries equal marks i.e 1
No Negative Marking

Page 1 of 2

1. Which of the following operating systems is a command-line operating system?

A.Windows 7

B.Windows 10

C.Android 7

D.DOS

E.BOSS

2. Which of the following components of the computer stores the data temporarily?

A.Hard Disk

B.Pen Drive

C.RAM

D.ROM

E.None of these

3. A user working on Windows 7 computer accidentally deletes a file by pressing the delete button. Now, the user wants to restore that file. From which of the following location, the user can restore the deleted file?

A.Recycle Bin

B.My Computer

C.Network

D.Control Panel

E.All of these

4. A computer can perform a variety of tasks in a variety of domains such as healthcare, education, entertainment, etc. Which of the following features describe this capacity of a computer?

A.Reliability

B.Accuracy

C.Consistently

D.Versatility

E.None of these

5. Which of the following operating system is not used in mobile phones?

A.Android OS

B.Bada

C.BlackBerry OS

D.IOS

E.Mac

6. Whenever an interrupt is detected by the CPU, which of the following action is taken by it?

A.Discards it

B.Completes it

C.Depends on CPU

D.Saves it

E.None of these

7. From what location are the 1st computer instructions available on boot up?

A.ROM BIOS

B.CPU

C.Boot.ini

D.CONFIG.SYS

E.None of these

8. A software that is used to convert high level language into machine language is known as a/an ___________.

A.Compiler

B.Interpreter

C.Assembler

D.Both Interpreter and assembler

E.None of these

9. Thrashing ___________.

A.Can always be avoided by swapping

B.Is a natural consequences of virtual memory system

C.Always occurs on large computers

D.Can be caused by poor paging algorithims

E.None of these

10. The main interface in Windows and OS X is a (n) _________ interface.

A.Command line

B.Embedded

C.Graphical

D.Embedded and neural

E.Neural

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11. Backup procedure helps in _________.

A.Restoring the operation whenever there is a disk failure

B.Restoring both application and system software whenever there is disk corruption.

C.Restoring the data sites whenever there is a system crash

D.All of these

E.None of these

12. Banker's Algorithm for resource allocation deals with __________.

A.Deadlock prevention

B.Deadlock avoidance

C.Deadlock recovery

D.Mutual exculsion

E.All of these

13. Consider the following pseudocode, where S is a semaphore initialized to 5 in line#2 and counter is a shared variable initialized to 0 in line#1. Assume that the increment operation in line#7 is not atomic.

int counter=0;
Semaphore S=init(5);
void parop(void)
{
wait (S) ;
wait (S) ;
counter++;
signal (S);
signal (S);
}

If five threads execute the function parop concurrently, which of the following program behavior(s) is/are possible?

A.The value of the counter is 5 after all the threads successfully completed the execution of parop.

B.The value of counter is 1 after all the threads successfully complete the execution of parop.

C.The value of counter is 0 after all the threads successfully complete the execution of parop.

D.There is a deadlock involving all the threads.

14. In the context of operating systems, which of the following statements is/are correct with respect to paging?

A.Paging helps solve the issue of external fragmentation.

B.Page size has no impact on internal fragmentation.

C.Paging incurs memory overheads

D.Multi-level paging is necessary to support pages of different sizes.

15. Which of the following services can be accessed by an interface in an operating system?

A.System Calls

B.Library

C.API

D.Assembly instructions

E.Classes

16.

Which of the following standard C library functions will always invoke a system call when executed from a single-Threaded process in a UNIX/Linux operating system?

A.exit

B.malloc

C.sleep

D.strlen

17.

Consider a linear list based directory implementation in a file system. Each directory is a list of nodes, where each node contains the file name along with the file metadata, each as the list of pointers to the data blocks. Consider a given directory foo.

Which of the following operations will necessarily require a full scan of foo for successful completion?

A.Creation of a new file in foo

B.Deletion of an existing file from foo

C.Renaming of an existing file in foo

D.Opening of an existing file in foo

18. The program that allows the OS to work with a printer or a video card is a (n) __________.

A.Utility

B.Driver

C.Applet

D.Contractor

E.System Call

19. A(n) _________ is a collection of information that determines which files you can access and which setting you use.

A.Network

B.User account

C.Operating system

D.File system

E.None of these

20. Which part of the computer provides only temporary storage of files?

A.ROM memory

B.Processor

C.Hard drive

D.Motherboard

E.RAM memory

Operating System MCQ Test Series Set-2

Total Number of Questions: 20

Each question carries equal marks i.e 1

No Negative Marking

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