Operating System MCQ Questions

Operating System MCQ Questions | Freshers & Experienced

  • Sharad Jaiswal
  • 01st Jun, 2021

Practice best Operating System MCQ Questions, which cover the latest and important topics of the Operating System, so you can perform best in interviews, competitive exams, and placement drives. this Operating System MCQ Quiz contains 35+ multiple-choice questions and answers, which are asked various times in exams or interviews. when you choose an option for these questions, the green color belongs to the right option & the red color belongs to the wrong option.

Operating System MCQ with Answers

1) If there are multiple recycle bin for hard disk?

  • A. You can set different size for each recycle bin
  • B.You can choose which recycle bin to use to store your deleted files
  • C.You can make any one of them default recycle bin
  • D.None of above

2) Identify false statement?

  • A. You can find deleted files in recycle bin
  • B.You can increase free space of disk by sending files in recycle bin
  • C.You can restore any files in recycle bin if you ever need
  • D.You can right click and choose Empty Recycle Bin to clean it at once

3) If the display system time and date is wrong, you can reset it using

  • A. Write
  • B.Calendar
  • C.Control panel
  • D.Write file

4) You should save your computer from

  • A. Viruses
  • B.Time bombs
  • C.Worms
  • D.All of the above

5) World Wide Web is being standard by

  • A. Worldwide corporation
  • B.World Wide Consortium
  • C.W3C
  • D.World Wide Web Standard

6) Two basic systems of operating system are

  • A. Batch and timesharing
  • B.Sequential and direct
  • C.Sequential and realtime
  • D.Batch and interactive

7) Daisy chain is a device for

  • A. Connecting a number of devices to a controller
  • B.Connecting a number of controllers to a device
  • C.Interconnecting a number of devices to a number of controllers
  • D.All of the above

8) In which of the following the most common systems security method is

  • A. Encryption
  • B.Passwords
  • C.Firewall
  • D.All of the above

9) Under multi-programming, turnaround time for short jobs is usually _________ and that for long jobs is slightly _______

  • A. shortened; shortened
  • B.shortened; lengthened
  • C.lengthened; shortened
  • D.lengthened; lengthened

10) Why block caches or buffer caches are used?

  • A. to speed up main memory read operation
  • B.to increase the capacity of the main memory
  • C.to handle interrupts
  • D.to improve disk performance

11) Which of the following refers to the associative memory?

  • A. the data are accessed sequentially
  • B.the address of the data is generated by the CPU
  • C.the address of the data is supplied by the users
  • D.there is no need for an address i.e. the data is used as an address

12) The table created by lexical analysis to describe all literals used in the source program, is

  • A. Identifier table
  • B.Terminal table
  • C.Literal table
  • D.Reductions

13) What is the size of ROM if it is used to store the table for multiplication of two 8 - bit unsigned integers?

  • A. 64k x 16
  • B.64k x 8
  • C.64k x 16
  • D.4k x 8

14) What is the use of thrashing?

  • A. It decreases the degree of multiprogramming
  • B.It implies excessive page I/O
  • C.It reduces page I/O
  • D.It improves system performance

15) What is the main function of command interpreter?

  • A. to get and execute the next user-specified command
  • B.to handle the files in the operating system
  • C.to provide the interface between the API and application program
  • D.None of the mentioned

16) Operating System maintains the page table for

  • A. Each address
  • B.Each thread
  • C.Each process
  • D.Each instruction

17) Paging is implemented in

  • A. Hardware
  • B.Operating System
  • C.Software
  • D.All of them

18) The operating system creates _____ from the physical computer

  • A. Virtual space
  • B.Virtual device
  • C.Virtual computers
  • D.None of the above

19) Cascading termination refers to termination of all child processes before the parent terminates ______.

  • A. Abnormally
  • B.Normally
  • C.Normally or abnormally
  • D.None of these

20) Which of the following is a single user operating system?

  • A. Windows
  • B.MAC
  • C.Ms-Dos
  • D.None of the above

21) What is the name of the diagnostic mode operating systems use?

  • A. MAC
  • B.Ms-Dos
  • C.Windows
  • D.None of the above

22) Which of the following is a database of information about the windows operating system including customized settings and software installations?

  • A. Resistry
  • B.Changelog
  • C.Performance monitor
  • D.None of the above

23) The multi user operating system is based on the concept of....................

  • A. Time-losing
  • B.Time-sharing
  • C.Time-gaining
  • D.Time-spooling

24) System software looks after the functions of the computer.

  • A. True
  • B.False

25) Application is one program running at all times on the computer.

  • A. True
  • B.False

26) There should be different levels of help to satisfy the needs of different levels of.............

  • A. Users
  • B.Hardware
  • C.Operating System
  • D.Computer system

27) Which of the following is valid permission in the linux file system?

  • A. Write
  • B.Modify
  • C.Change
  • D.Full Control

28) Which of the following is not a computer language?

  • A. C++
  • B.JAVA
  • C.LOTUS
  • D.BASIC

29) Network Interface Card (NIC) is generally used for.............

  • A. Deleting
  • B.Printing
  • C.Programming
  • D.Connectivity

30) Wild-card specifiers..............

  • A. Can Be Used When Writing A File
  • B.Allow Several Files To Be Read Simultaneously
  • C.Are Only Used When Printing The Contents Of Files
  • D.Provide An Easy Way Of Finding Groups Of Related Files

31) Which one of the following is not a real time operating system?

  • A. RTLinux
  • B.VxWorks
  • C.Palm OS
  • D.Windows CE

32) System call provides the interface to access the services of the operating system.

  • A. True
  • B.False

33) Which structure prohibits the sharing of files and directories?

  • A. Tree Structure
  • B.One Level Structure
  • C.Two Level Structure
  • D.None of the above

34) Access time is the highest in case of...............

  • A. Cache
  • B.Floppy Disk
  • C.Magnetic Disks
  • D.Swapping Devices

35) Which type of file organization are supported by magnetic tape?

  • A. Random files
  • B.Indexed sequential file
  • C.Contiguous sequential file
  • D.All of the Above

36) Which type of file organization are supported by magnetic tape?

  • A. Random files
  • B.Indexed sequential file
  • C.Contiguous sequential file
  • D.All of the Above

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