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Which of the following memories needs refresh?

A. SRAM

B. DRAM

C. ROM

D. All of above

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

You can do it
  1. Which of the following statement is valid?
  2. When we look at the cost, which of the following computer is most expensive?
  3. A directly accessible appointment calendar is feature of a __ resident package
  4. Which of the following devices have a limitation that we can only store information to it but cannot…
  5. Which device can understand difference between data & programs?
  6. Coded entries which are used to gain access to a computer system are called
  7. The time for which a piece of equipment operates is called
  8. EEPROM stands for
  9. The system unit of a personal computer typically contains all of the following except:
  10. Which of the following is not a class of computers based on size?
  11. The accuracy of the floating-point numbers representable in two 16-bit words of a computer is approximately
  12. A register organized to allow to move left or right operations is called a ____
  13. The tracks on a disk which can be accessed without repositioning the R/W heads is
  14. People often call as the brain of computer system
  15. What is the main difference between a mainframe and a super computer?
  16. In _____ mode, the communication channel is used in both directions at the same time?
  17. Help Menu is available at which button?
  18. Microprocessors can be used to make
  19. Which of the following is not a primary storage device?
  20. Before a disk drive can access any sector record, a computer program has to provide the record's disk…
  21. Which of the following is not the classification of computers based on application?
  22. An error in computer data is called
  23. Which computers used operating systems by Microsoft?
  24. EBCDIC stands for
  25. Which of the following is a class of computers based on model?
  26. Which of the following is still useful for adding numbers?
  27. The task of performing operations like arithmetic and logical operations is called
  28. Instructions and memory address are represented by
  29. Which of the following is first generation of computer
  30. VGA is