Which of the following are the functions of a operating system

A. Allocates resources

B. Monitors Activities

C. Manages disks and files

D. All of the above

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

You can do it
  1. The word processing task associated with changing the appearance of a document is
  2. CD-ROM stands for
  3. When was the world's first laptop computer introduced in the market and by whom?
  4. Examples of output devices are
  5. From which generation operating systems were developed?
  6. Which computer was considered the first electronic computer until 1973 when court invalidated the patent?
  7. The device used to carry digital data on analogue lines is called as
  8. ENIAC uses
  9. Which of the following code used in present day computing was developed by IBM Corporation?
  10. The two kinds of main memory are:
  11. Who invented the microprocessor?
  12. Chief component of first generation computer was
  13. A system is
  14. The digital computer was developed primarily in
  15. Which statement is valid about interpreter?
  16. ______ computers are also called personal computers
  17. A digital computer did not score over an analog computer in terms of
  18. Plotter accuracy is measured in terms of repeatability and
  19. In a computer, most processing takes place in
  20. A modern digital computer has
  21. In _____ mode, the communication channel is used in both directions at the same time?
  22. Floppy disks typically in diameter
  23. Which is the first electronic digital computer?
  24. in which year was UKs premier computing event called ?The which computer? started?
  25. RAM stands for
  26. The two major types of computer chips are
  27. The Second Generation Computer was based on .
  28. Which of the following file organization is most efficient for a file with a high degree of file activity?
  29. Which of the following are the cheapest memory devices in terms of Cost/Bit?
  30. Which computer memory is used for storing programs and data currently being processed by the CPU?