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Unit 1: Computer Systems

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Question 1 of 40 0% read

1. How many bits does the standard ASCII code use to represent a single character?

A 7 bits
B 16 bits
C 4 bits
D 32 bits

2. Which number system is a shorthand of binary?

A Decimal
B Octal
C Hexadecimal
D Both B and C

3. Which software provides security to system?

A Word processor
B Antivirus
C Spreadsheet
D Presentation software

4. Which of the following is the best example of system software?

A MS Word
B Google Chrome
C Video Game
D Windows 10

5. Binary number system is based on which digits?

A 0 and 9
B 1 and 2
C 0 and 1
D 2 and 3

6. Which number system has a base of 2 and uses only the digits 0 and 1?

A Decimal
B Binary
C Hexadecimal
D Octal

7. Which number system is most easily understood by humans?

A Decimal
B Binary
C Hexadecimal
D Octal

8. Which software controls startup of computer?

A Compiler
B BIOS
C Application software
D Antivirus

9. Which component manages computer hardware?

A Application software
B Utility software
C Operating system
D Compiler

10. A group of 8 bits is commonly known as a:

A Byte
B Kilobyte
C Bit
D Megabyte

11. Which software helps in file management?

A Utility software
B Application software
C Firmware
D Language processor

12. Which type of software is Windows?

A Application software
B Utility software
C System software
D Firmware

13. Which OS provides GUI?

A DOS
B Windows
C Assembly
D Machine language

14. Unicode commonly uses how many bits?

A 7
B 8
C 16
D 32

15. Machine language is written in?

A English
B Symbols
C Binary
D Decimal

16. Which code is limited to English characters?

A Unicode
B ASCII
C UTF-8
D UTF-16

17. Which software translates high-level language?

A Editor
B Compiler
C Operating system
D Utility

18. Which letters are used in hexadecimal system?

A A to F
B A to Z
C B to G
D F to Z

19. Which coding system is an extension of ASCII and can represent characters from almost all languages in the world?

A BCD
B EBCDIC
C Unicode
D Morse Code

20. The decimal number 10 is equal to which binary number?

A 1100
B 1111
C 1010
D 1001

21. What is machine level data representation?

A Data stored in files
B Data represented using binary form
C Data shown on screen
D Data printed on paper

22. Which type of software is responsible for the overall control and management of computer operations?

A Microsoft Word
B Antivirus
C Photoshop
D System Software

23. What does GUI stand for?

A General User Interface
B Graphical User Interface
C Global User Internet
D Graphical Utility Interface

24. What is the main software that manages all the hardware and software on a computer?

A Web Browser
B Antivirus
C MS Office
D Operating System

25. Which number system is easiest for humans?

A Binary
B Octal
C Decimal
D Hexadecimal

26. Which software helps maintain system performance?

A Application software
B Utility software
C Operating system
D Compiler

27. Unicode was developed to overcome limitations of?

A Binary
B Decimal
C ASCII
D Hexadecimal

28. How many bits make one byte?

A 4
B 6
C 8
D 16

29. What is a single binary digit, either a 0 or a 1, called?

A Byte
B Bit
C Nibble
D Word

30. Which is an example of system software?

A Excel
B PowerPoint
C Windows
D Photoshop

31. Which number system uses base 10?

A Binary
B Octal
C Decimal
D Hexadecimal

32. Which software is used to perform specific tasks?

A System software
B Application software
C Firmware
D BIOS

33. Binary digit is also called?

A Byte
B Nibble
C Bit
D Word

34. What is computer software?

A Physical components
B Set of instructions
C Electrical wires
D Input devices

35. Which coding scheme supports many languages?

A ASCII
B BCD
C Unicode
D EBCDIC

36. Which number system uses digits from 0 to 7?

A Binary
B Decimal
C Octal
D Hexadecimal

37. Which number system is used internally by computers?

A Decimal
B Binary
C Octal
D Hexadecimal

38. Hexadecimal number system uses base?

A 2
B 8
C 10
D 16

39. Software that is free to use and modify is called?

A Paid software
B Proprietary software
C Open-source software
D Utility software

40. Operating system acts as a?

A Translator
B Interface between user and hardware
C Input device
D Output device

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