Important Computer MCQS For CSS PMS PPSC FPSC NTS -Set 3

1. Which of the following storage devices can store maximum amount of data?
A. Floppy Disk

B. Hard Disk

C. Compact Disk

D. Magneto Optic Disk

2. Which of the following is the largest manufacturer of Hard Disk Drives?
A. IBM

B. Seagate

C. Microsoft

D. 3M

3. The programs which are as permanent as hardware and stored in ROM is known as
A. Hardware

B. Software

C. Firmware

D. ROM ware

4. Memory unit is one part of
A. Input device

B. Control unit

C. Output device

D. Central Processing Unit

5.Who built the first Mechanical Calculator
A. Joseph Marie Jacquard

B. John Mauchly

C. Blaise Pascal

D. Howard Aiken

6. The earliest calculating devices are
A. Abacus

B. Clock

C. Difference Engine

D. None of these

7. Which device is used as the standard pointing device in a Graphical User
Environment?
A. Keyboard

B. Mouse

C. Joystick

D. Track ball

8. Which number system is usually followed in a typical 32-bit computer?
A. 2

B. 10

C. 16

D. 32

9. Which number system is usually followed in a typical 32-bit computer?

A. Binary

B. Decimal

C. Hexadecimal

D. Octal

10. Which of the following is not an output device?
A. Scanner

B. Printer

C. Flat Screen

D. Touch Screen

11. Which of the following devices have a limitation that we can only store information
to it but cannot erase or modify it?
A. Floppy Disk

B. Hard Disk

C. Tape Drive

D. CDROM

12. Which technology is used in Compact disks?
A. Mechanical

B. Electrical

C. Electro Magnetic

D. Laser

13. Which of the following is a programming language?
A. Lotus

B. Pascal

C. MS-Excel

D. Netscape

14. What is a compiler?
A. A compiler does a conversion line by line as the program is run

B. A compiler converts the whole of a higher level program code into machine code in
one step

C. A compiler is a general purpose language providing very efficient execution

D. None of the above

15. What is an interpreter?

A. An interpreter does the conversion line by line as the program is run

B. An interpreter is the representation of the system being designed

C. An interpreter is a general purpose language providing very efficient execution

D. None of the above

15. When a key is pressed on the keyboard, which standard is used for converting the
keystroke into the corresponding bits?
A. ANSI

B. ASCII

C. EBCDIC

D. ISO

16. A Pixel is ………
A. A computer program that draws picture

B. A picture stored in secondary memory

C. The smallest resolvable part of a picture

D. None of these

 

17. Mostly which of the following device is used to carry user files?
A. Floppy Disk

B. Hard Disk

C. RAM

D. CDROM

18. Which device is used to backup the data?
A. Floppy Disk

B. Tape

C. Network Drive.

D. All of the above

19. In order to play and hear sound on a computer, one needs:
A. a sound card and speakers

B. a microphone

C. all of them required

D. none of them required

20. Which of the following are the cheapest memory devices in terms of Cost/Bit?
A. Semiconductor memories

B. Magnetic Disks

C. Compact Disks

D. Magnetic Tapes

21. Which of the following are the best units of data on an external storage device?
A. Bits

B. Bytes

C. Hertz

D. Clock cycles

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