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Which of the following is/ are operating systems

A. Windows

B. Unix

C. OS/2

D. All of these

Please do not use chat terms. Example: avoid using "grt" instead of "great".

You can do it
  1. Unwanted repetitious messages, such as unsolicited bulk e-mail is known as
  2. A device invented by Dr. Bobeck in 1966, for mass storage of data is
  3. Which of the following is true?
  4. An input /output device at which data enters or leaves a computer system is
  5. Select the Odd one
  6. Who is credited with the idea of using punch cards to control patterns in a waving machine?
  7. Which of the following is not an electronic computer?
  8. EPROM can be used for
  9. The actual execution of instructions happens in
  10. Which is a semi conductor memory?
  11. MIS is designed to provide information needed for effective decision making by?
  12. The Width of a processor's data path is measured in bits. Which of the following are common data paths?
  13. In a computer, most processing takes place in
  14. A computer program that converts an entire program into machine language at one time is called a/ an
  15. ASCII and EBCDIC are the popular character coding systems. What does EBCDIC stand for?
  16. Which of the following programming language started from second generation?
  17. A modern electronic computer is a machine that is meant for
  18. Registers which are partially visible to users and used to hold conditional codes (bits set by the CPU…
  19. 174. When was the X window system born?
  20. ASCII is a coding system that provides
  21. Which computer has been designed to be as compact as possible?
  22. One of the main feature that distinguish microprocessors from micro-computer is
  23. Basic is _____ language.
  24. Which of the following computer language is used for artificial intelligence?
  25. The organization and interconnection of the various components of a computer system is
  26. The basic operations performed by a computer are
  27. IBM System/360 is
  28. Which was the computer conceived by Babbage?
  29. ________ Computers are of large size
  30. Magnetic disk is an example of