Basic MCQs of Computer Science (IT) for NTS and PPSC Test

PPSC Computer Science MCQs

1. Mostly which of the following device is used to carry user files?
A. Floppy Disk B. Hard Disk C. RAM D. CDROM

2. Which device is used to backup the data?
A. Floppy Disk B. Tape
C. Network Drive. D. All of the above

3. 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

4. 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

5. Which of the following are the best units of data on an external storage device?
A. Bits B. Bytes
C. Hertz D. Clock cycles

6. Which of the following have the fastest access time?
A. Semiconductor MemoriesB. Magnetic Disks
C. Magnetic Tapes D. Compact Disks

7. Which of the following is a read only memory storage device?
A. Floppy Disk B. CDROM
C. Hard Disk D. None of these

8. Which of the following is a programming language?
A. Lotus B. Pascal
C. MS-Excel D. Netscape

9. 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

10. 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

11. 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

13. 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

14. Which device is used as the standard pointing device in a Graphical User Environment?
A. Keyboard B. Mouse
C. Joystick D. Track ball

15. Which number system is usually followed in a typical 32-bit computer?
A. 2 B. 10
C. 16 D. 32

16. Which number system is usually followed in a typical 32-bit computer?
A. Binary B. Decimal
C. Hexadecimal D. Octal

17. Which of the following is not an output device?
A. Scanner B. Printer
C. Flat Screen D. Touch Screen

18. 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

19. Which technology is used in Compact disks?
A. Mechanical B. Electrical
C. Electro Magnetic D. Laser

20. 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

21. Which of the following is the largest manufacturer of Hard Disk Drives?
A. IBM B. Seagate
C. Microsoft D. 3M

22. The program which are as permanent as hardware and stored in ROM is known as
A. Hardware B. Software
C. Firmware D. ROM ware

23. Memory unit is one part of
A. Input device B. Control unit
C. Output device D. Central Processing Unit

24.Who built the first Mechanical Calculator
A. Joseph Marie Jacquard B. John Mauchly
C. Blaise Pascal D. Howard Aiken

25. The earliest calculating devices are
A. Abacus B. Clock
C. Difference Engine D. None of these

26. Punched cards were first introduced by
A. Powers B. Pascal
C. Jacquard D. Herman Hollerith

27. Word length of a Personal Computer is ___
A. 4 bits B. 8 bits
C. 16 bits D. 64 bits

28. Cursor is a ____
A. Pixel B. Thin blinking line
C. Pointing device D. None of these

29. Operating system, editors, and debuggers comes under?
A. System SoftwareB. Application Software
C. Utilities D. None of the above

30. Which device is required for the Internet connection?
A. Joystick B. Modem
C. CD Drive D. NIC Card

31. What does DMA stand for?
A. Distinct Memory Access B. Direct Memory Access
C. Direct Module Access D. Direct Memory Allocation

32. When did John Napier develop logarithm?
A. 1416 B. 1614
C. 1641 D. 1804

33. A normal CD-ROM usually can store up to __________data?
A. 680 KB B. 680 Bytes
C. 680 MB D. 680 GB

34. ATM stands for?
A. Automatic Talking Machine
B. Automatic Teller Machine
C. Analog Teller Machine
D. Automatic Ticketing Machine

35. The Second Generation Computer was based on ………….
A. Vacuum Tube B. Silicon Chips
C. Transistor D. Bio Chips

36. The Third Generation Computer was made with ………….
A. Vacuum Tube B. Discrete Components
C. IC D. Bio Chips

37. The BIOS is the abbreviation of ………….
A. Basic Input Output System B. Best Input Output System
C. Basic Input Output Symbol D. Base Input Output System

38. What do you call a single point on a computer screen
A. Cell B. Element
C. Pixel D. Bit

39. How was the generation of computer classified?
A. by the device used in memory & processor
B. by the speed of computer
C. by the model of the computer
D. by the accuracy of computer

40. Through which device the main components of the computer communicate with each other?
A. Keyboard B. System Bus
C. Monitor D. Memory

41. Which is a valid program to access the Internet?
A. Access B. Front Page
C. Windows Explorer D. Netscape

42. Which one is the Low Level Language?
A. Assembly B. Visual Basic
C. Java D. C++

43. Which is a volatile memory?
A. ROM B. BIOS
C. PROM D. RAM

44. The digital signals can be represented by
A. Binary Codes B. 0 and 1
C. High and Low D. all of the above

45. Which program can be used for email?
A. Internet Explorer B. Outlook Express
C. NetMeeting D. FrontPage

46. Modulator-demodulator is a device that converts:
A. Digital signal into analog signal
B. Analog signal into digital signal
C. Both A and B
D. None of the above

47. _______ is used for scanning the pictures and putting them in digitized form in the computer.
A. CD-ROM B. Plotter
C. Bar-coder D. Scanner

48. Animator, 3D Studio, Corel Draw and Flash are………….
A. Word processors B. Spreadsheet packages
C. Multimedia S/W D. None of the above

49. Which statement is valid?
A. 1 KB = 8 bytes B. 1 MB = 8 KB
C. 1 KB = 1024 bytesD. 1 MB = 1024 bytes

50. Which device is used to process data?
A. CPU B. RAM
C. DCU D. VDU

51. Who is known as the father of Computer Science?
A. Charles BabbageB. Howard Aiken
C. Dr. Herman Hollerith D. Blaise Pascal

52. What is the capacity of a 3.5” Floppy Disk?
A. 360KB B. 720KB
C. 1.2MB D. 1.44MB

53. A Personal Computer (PC) is a …………….. Computer.
A. Super B. Main Frame
C. Mini D. Micro

54. What type of printers are Dot Matrix Printers?
A. Laser B. Inkjet
C. Impact D. Drum

55. What is the full form of RAM?
A. Read Access Memory B. Random Access Memory
C. Rapid access Memory D. none