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The _________takes any characters from standard input, and then echoes them to standard output.

A. kill character

B. cat command

C. cate command

D. control command

Correct Answer : B.


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  1. Which of the following is drop down list?
  2. Which of the following is/are external commands?
  3. A process is already split into pieces, called________________.
  4. _______refers to the block size of the DSM system, i.e. to the units of sharing and the unit of data…
  5. A standard UNIX system includes a set of ___________ and a set of ___________.
  6. Bootstrapping is also known as ______
  7. ____________ file system allows sharing in multiple different locations grouped under one folder.
  8. Whenever you move a directory from one location to another
  9. Two clocks are said to be synchronized at a particular instance of time if the difference in time values…
  10. In___________, the requesting device or devices assert the signal bus_request.
  11. Which one of the following statements is true?
  12. Process migration involves__________________
  13. _______________occurs when two or more execution flows are able to run simultaneously.
  14. A program to be executed must be in ---------------
  15. A process is ____________________
  16. When a peripheral device needs immediate attention from the operating system, it generates a(n)
  17. Taskbar is used for
  18. You can use print manage window
  19. IDL stands for_____________________
  20. What do you mean by 0-reliable level in multicast communication?
  21. Find out the characteristics of System-oriented names:
  22. When copying more than one file at a time, you must specify an existing directory as the ___________
  23. Which buffering strategy is used for implementing synchronous communication?
  24. ____________approach can place the data directly into the memory or take the data directly from the…
  25. Which of the following is an essential file of a MS-DOS boot disk?
  26. The date and time displays on
  27. An option commonly takes the form of a _____followed by __________characters.
  28. In _______, if a processor writes the value 100 to the memory location x, this write operation will…
  29. Recently deleted files are stored in
  30. An unauthorized party inserts counterfeit objects into the system is called_________________