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21. Which of the following controls the process of interaction between the user and the operating system?

A. User interface
B. Language translator
C. Platform
D. Screen saver

22. The first computers were programmed using___________?

A. Assembly language
B. Machine language
C. Source code
D. Object code

23. __________is a combination of hardware and software that facilitates the sharing of information between computing devices.

A. Network
B. Peripheral
C. Expansion board
D. Digital device

24. Coded entries which are used to gain access to a computer system are called__________?

A. Entry codes
B. Passwords
C. Security commands
D. Code words

25. Which of the following statements is true about Minicomputer and Microcomputer?

A. Minicomputer works faster than Microcomputer
B. Microcomputer works faster than Minicomputer
C. Speed of both the computers is the same
D. The speeds of both these computers cannot be compared with the speed of advanced

26. WAN stands for_____________?

A. Wap Area Network
B. Wide Area Network
C. Wide Array Net
D. Wireless Area Network

27. What is the main difference between a mainframe and a super computer?

A. Super computer is much larger than mainframe computers
B. Super computers are much smaller than mainframe computers
C. Supercomputers are focused to execute few programs as fast as possible while mainframe uses its power to execute as many programs concurrently
D. Supercomputers are focused to execute as many programs as possible while mainframe uses its power to execute few programs as fast as possible.

28. _________ is called the father of modern digital computer?

A. Leibnitz
B. Blaise Pascal
C. Charles Babbage
D.  J.H  Muller

29. Who is the father of Computer science?

A. Allen Turing
B. Charles Babbage
C. Simur Cray
D. Augusta Adaming

30. A CPU contains___________?

A. a card reader and a printing device
B. an analytical engine and a control unit
C. a control unit and an arithmetic logic unit
D. an arithmetic logic unit and a card reader

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