Computer Science Practice MCQ Question and Answer

To access the services of the operating system, the interface is provided by the _

A. a) Library

B. b) System calls

C. c) Assembly instructions

D. d) API

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In Operating Systems, which of the following is/are CPU scheduling algorithms?

A. a) Priority

B. b) Round Robin

C. c) Shortest Job First

D. d) All of the mentioned

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What is the main function of the command interpreter?

A. a) to provide the interface between the API and application program

B. b) to handle the files in the operating system

C. c) to get and execute the next user-specified command

D. d) none of the mentioned

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What is an operating system?

A. a) interface between the hardware and application programs

B. b) collection of programs that manages hardware resources

C. c) system service provider to the application programs

D. d) all of the mentioned

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Which of following is HTML tag

A. (A) # and #

B. (B) { and }

C. (C) ! and ?

D. (D) < and >

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What enables a computer to worksmoothly with printers

A. A. Drivers

B. B. ROM

C. C. RAM

D. D. None

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Errors from computer hardware and software can be identified and removed by process:

A. Interface

B. Debugging

C. Formatting

D. Flip Flop

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Which function displays row data into column or column data into row?

A. Transpose

B. Pivot

C. Filter

D. Sort

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With which of the following all formulas in excel starts ?

A. A) /

B. B) *

C. C) $

D. D) =

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In MS Excel, you have a list of sales data in column A, and you need to find the second highest unique value in this list. Which of the following formulas will correctly return the second highest unique value?

A. A =LARGE(A:A, 2)

B. B =LARGE(UNIQUE(A:A), 2)

C. C =INDEX(SORT(UNIQUE(A:A), , -1), 2)

D. D =SMALL(UNIQUE(A:A), 2)

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Which of the following part of a processor contains the hardware necessary to perform all the operations required by a computer?

A. a) Controller

B. b) Registers

C. c) Cache

D. d) Data path

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Which of the following is not a type of computer code?

A. a) EDIC

B. b) ASCII

C. c) BCD

D. d) EBCDIC

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Which of the following monitor looks like a television and are normally used with non-portable computer systems?

A. a) LED

B. b) LCD

C. c) CRT

D. d) Flat Panel Monitors

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Which of the following unit is responsible for converting the data received from the user into a computer understandable format?

A. a) Output Unit

B. b) Input Unit

C. c) Memory Unit

D. d) Arithmetic & Logic Unit

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Which of the following is the smallest unit of data in a computer?

A. a) Bit

B. b) KB

C. c) Nibble

D. d) Byte

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Which of the following is not a characteristic of a computer?

A. a) Versatility

B. b) Accuracy

C. c) Diligence

D. d) I.Q.

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Which of the following is the brain of the computer?

A. a) Central Processing Unit

B. b) Memory

C. c) Arithmetic and Logic unit

D. d) Control unit

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Which of the following computer language is written in binary codes only?

A. a) pascal

B. b) machine language

C. c) C

D. d) C#

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What is the full form of CPU?

A. a) Computer Processing Unit

B. b) Computer Principle Unit

C. c) Central Processing Unit

D. d) Control Processing Unit

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Which of the following is the correct definition of Computer?

A. a) Computer is a machine or device that can be programmed to perform arithmetical or logic operation sequences automatically

B. b) Computer understands only binary language which is written in the form of 0s & 1s

C. c) Computer is a programmable electronic device that stores, retrieves, and processes the data

D. d) All of the mentioned

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Pen plotters use:

A. Ink cartridges

B. Colored pencils

C. Toner cartridges

D. Liquid ink tanks

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Plotters are well-suited for printing:

(A) Small documents
(B) Large-scale engineering drawings
(C) Everyday letters
(D) Presentation slides

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A hard disk drive (HDD) stores data:

(A) Magnetically
(B) Optically
(C) Flash memory
(D) All of the above

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What does SRAM stand for?

Strong Random Access Memory
Serialized Random Access Memory
Static Random Access Memory
All of these

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Which of these are considered as primary memory?

RAM
ROM
Cache
Both A and B

Answer: D) Both A and B

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