Computer Knowledge

Operating Systems

1,344 Questions

Test your computer knowledge with these questions on operating systems. The content covers various platforms including Unix, Linux, Windows, Android, and Macintosh. These questions are commonly asked in the computer knowledge sections of banking and government exams.

Unix emulatorsLinux distributionsAndroid software stackMacintosh operating systemsWindows OS versionsSymbian OS history

Operating Systems Questions

Multiple choice

Which of thye following pages will be chosen for replacement by the Optimal Page Replacement Algorithm?

  1. Page which has been used the least number of times.

  2. Page that has not been used in the past for the longest.

  3. Page whose next use will occur farthest in the future.

  4. Page which arrived the earliest.

  5. Any page
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Optimal page replacement policy is an algorithm that works as follows: when a page needs to be swapped in, the operating system swaps out the page whose next use will occur farthest in the future. For example, a page that is not going to be used for the next 6 seconds will be swapped out over a page that is going to be used within the next 0.4 seconds.

Multiple choice

An administrator issues the command confreg 0×2142 at the rommon 1> prompt. What is the effect when this router is rebooted?

  1. Contents in RAM will be erased.

  2. Contents in RAM will be ignored.

  3. Contents in NVRAM will be erased.

  4. Contents in NVRAM will be ignored.
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Configuration register 0x2142 tells the router to ignore the contents of NVRAM (startup-config) during boot. This is used in password recovery procedures to bypass the startup configuration, allowing access to the router without knowing the enable password.

Multiple choice

Which of the following is not true for a device driver?

  1. Drivers are hardware dependent.

  2. Drivers are operating system specific.

  3. Virtual device driver can also send simulated processor level events into the virtual machine.

  4. Virtual devices cannot operate in a non virtualized environment.

  5. Device drivers can operate in both user as well as kernel mode.
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Virtual devices may also operate in a non-virtualized environment. For example a virtual network adapter is used with a virtual private network, while a virtual disk device is used with iSCSI. The best example for virtual device drivers can be Daemon Tools.

Multiple choice

Which of the following is not system software?

  1. Compiler

  2. Operating system

  3. Assembler

  4. Desktop publishing software
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

 DTP is concerned with the application of computer that enables small companies of individual to produce reports, visiting cards, calendar, advertising, magazines etc. at the best printing quality. With the use of DTP software through modern computers, several types of work like, advertisements, publishing of books etc. can be implemented in easier way.  

Multiple choice

Which of the following is not an operating system?

  1. Windows

  2. Unix

  3. Linux

  4. MS Office

  5. Solaris
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

MS Office is an application software package developed by Microsoft Corporation. It is used to create and edit documents. It is not an operating system.

Multiple choice

Which of the following operating systems uses write through catches?

  1. UNIX

  2. DOS

  3. ULTRIX

  4. XENIX

  5. _
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

The term DOS is referred to as disk operating system, but it is most often used as a shorthand for MS-DOS. Originally developed by Microsoft for IBM, it is an acronym for several computer operating systems that were operated by using the command line.

Multiple choice

Which of the following is not a layer of Unix operating system?

  1. Kernal

  2. Service

  3. Shell

  4. User application

  5. Application software
Reveal answer Fill a bubble to check yourself
E Correct answer
Explanation

It does not belong to the layer of Unix operating system. An application software is not necessary to run our computer. It is used for extra features like image editing etc.