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When was vacuum tube invented?

A. 1900

B. 1906

C. 1910

D. 1880

Correct Answer : B.


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  1. Which method is used to connect a remote computer?
  2. Which type of computers uses the 8-bit code called EBCDIC?
  3. RJ45 UTP cable has ________ Cables.

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    Who invented the high level language C?
  5. Regarding a VDU, Which statement is more correct?
  6. Personnel who design, program, operates and maintains computer equipment refers to
  7. An area of a computer that temporarily holds data waiting to be processed is________
  8. Note book, laptop, palm, hand-held computers are coming under the category of________ computer
  9. Microprocessors can be used to make
  10. Which of the following statement is false?
  11. An application suitable for sequential processing is
  12. A byte consists of
  13. Which of the following is used as a primary storage device?
  14. COBOL is an acronym for________
  15. The word length of a computer is measured in
  16. Which of the following contains permanent data and gets updated during the processing of transactions?
  17. BCD is
  18. Once you load the suitable program and provide required data, computer does not need human intervention.…
  19. A logic bomb that was created to erupt on Michelangelos birthday is an example of a:
  20. Which computer was considered the first electronic computer until 1973 when court invalidated the patent?
  21. Computers with 80286 microprocessor is
  22. Which one of the following is NOT a computer language
  23. Fifth generation computer is also known as
  24. A self replicating program, similar to a virus which was taken from a 1970s science fiction novel by…
  25. Which is not a comptuer of first generation?
  26. Instruction in computer languages consists of
  27. The value of each bead in heaven is
  28. Which electronic component was made out of semiconductor material?
  29. What is the most common tool used to restrict access to a computer system?
  30. Floppy disks typically in diameter