Operating System Questions and Answers

Multiple Choice Questions and Answers

Question 1 : Operating system means

(a) A set of programs which controls computer working
(b) A way a computer operator works
(c) A way a floppy disk drive operates
(d) All of the above

Answer : (a)

Question 2 : The primary job of an OS is to

(a) Command Resources
(b) Manage Resources
(c) Provide utilities
(d) Be user friendly

Answer : (b)

Question 3 : When a computer is ON, then its OS software has to reside in

(a) Primary storage
(b) Main storage
(c) AUX storage
(d) None of the above

Answer : (a)

Question 4 : An OS used by Macintosh computer is

(a) System 7.0
(b) AU/X
(c) Xenis
(d) Either (a) or (b)

Answer : (d)

Question 5 : The process of transferring data intended for a peripheral device onto a disk for some period of time is known as

(a) Multiprogramming
(b) Spooling
(c) Caching
(d) None of the above

Answer : (b)

Question 6 : Two basic types of OS are

(a) Batch and time sharing
(b) Sequential and real time
(c) Direct and interactive
(d) Batch and interactive

Answer : (d)

Question 7 : A virtual computer is a combination of

(a) Computer hardware + Softwares
(b) Hardware + Softwares + Processes
(c) Computer hardware + OS
(d) None of the above

Answer : (c)

Question 8 : An OS is an

(a) Application program
(b) System program
(c) AI program
(d) None of the above

Answer : (b)

Question 9 : A shell is a

(a) Hardware component
(b) Command Interpreter
(c) Part of a compiler
(d) None of the above

Answer : (b)

Question 10 : A front-end processor is usually used in

(a) Time sharing
(b) Multiprogramming
(c) Virtual storage
(d) None of the above

Answer : (a)

Question 11 : Which of the following does not form an OS layer

(a) Kernel
(b) shell
(c) Application Programs
(d) Critical section

Answer : (d)

Question 12 : A small program which loads OS into the memory is called as

(a) ROM
(b) Bootstrap loader
(c) BIOS
(d) None of the above

Answer : (b)

Question 13 : A method of overlapping input, output and processing of a single job is

(a) Buffering
(b) Spooling
(c) DMA
(d) None of the above

Answer : (a)

Question 14 : SPOOLING stands for

(a) Spontaneous primary operation online
(b) Simultaneous peripheral operation online
(c) Small peripheral operation online
(d) None of the above

Answer : (b)

Question 15 : In soft RTS, data file sizes are

(a) Small
(b) Medium
(c) Large
(d) None of the above

Answer : (c)

Question 16 : An example of a firm RTS (real time system) is

(a) Patient ventilator
(b) Moving car
(c) Conveyer belt
(d) None of the above

Answer : (a)

Question 17 : Rotating priority is used in

(a) Round Robin algorithm
(b) FCFS
(c) SJF
(d) None of the above

Answer : (a)

Question 18 : Which of the following is an example of Real-time OS

(a) UNIX
(b) MARUTI
(c) WIN-NT
(d) None of the above

Answer : (b)

Question 19 : An example of Network OS is

(a) BSD
(b) Harmony
(c) MS-DOS
(d) None of the above

Answer : (a)

Question 20 : The term ‘process’ was coined by

(a) Barry Boehm
(b) Daley
(c) Albrecht
(d) None of the above

Answer : (b)

Question 21 : PCB stands for

(a) Process common box
(b) Process control Block
(c) Process care Block
(d) None of the above

Answer : (b)

Question 22 : A controller will have three things

(a) Process + Micro code + Local memory
(b) Micro code only
(c) Micro code + memory
(d) None of the above

Answer : (a)

Question 23 : The size of WIN-NT OS is about 1,60,000 LOC while WIN-2000 has a size of 

(a) 1,25,00,000 LOC
(b) 2,20,00,000 LOC
(c) 3,25,00,000 LOC
(d) None of the above

Answer : (c)

Question 24 : One can interact with an OS by means of

(a) System commands
(b) System calls
(c) Both a or b
(d) None of the above

Answer : (c)

Question 25 : A modern OS that can be used in supercomputers also is

(a) System V Release 4
(b) MS-DOS
(c) Linux
(d) None of the above

Answer : (a)

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