What is the most common tool used to restrict access to a computer system?

A. User logins

B. Passwords

C. Computer keys

D. Access-control software

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

You can do it
  1. BCD is
  2. CD-ROM is a
  3. ALU and Control Unit jointly known as
  4. Hard disk is coated in both side with
  5. Which of the following is input device?
  6. Which type of computers uses the 8-bit code called EBCDIC?
  7. Once you load the suitable program and provide required data, computer does not need human intervention.…
  8. Which of the following memory medium is not used as main memory system?
  9. An output device that uses words or messages recorded on a magnetic medium to produce audio response…
  10. Which of the following is required when more than one person uses a central computer at the same time?
  11. Which of the following is also known as brain of computer
  12. The term GIGO is relate to which characteristics of computers?
  13. 174. When was the X window system born?
  14. MIS is designed to provide information needed for effective decision making by?
  15. Which was the computer conceived by Babbage?
  16. Who is the inventor of ABC Computer?
  17. The capacity of 3.5 inch floppy disk is
  18. Which of the following memories has the shortest access times?
  19. Before a disk drive can access any sector record, a computer program has to provide the record's disk…
  20. In latest generation computers, the instructions are executed
  21. Which is not a basic function of a computer?
  22. The arranging of data in a logical sequence is called
  23. A normal CD-ROM usually can store up to data?
  24. What type of virus uses computer hosts to reproduce itself?
  25. EBCDIC stands for
  26. First page of Website is termed as-
  27. Which of the following is correct acronym of VGA?
  28. Today's computer giant IBM was earlier known by different name which was changes in 1924. What was that…
  29. BCD is
  30. Multi user systems provided cost savings for small business because they use a single processing unit…