Here we have 50 multiple-choice questions (MCQs) focused on Fundamentals of Binary system and hexadecimal notation, along with answers and explanations.

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1. What is the base of the binary number system?

  • 2
  • 8
  • 10
  • 16

2. How many unique values can be represented by 4 bits in binary?

  • 2
  • 4
  • 8
  • 16

3. What is the hexadecimal equivalent of the binary number 1101?

  • D
  • 13
  • 7
  • A

4. What is the decimal equivalent of the binary number 101011?

  • 53
  • 43
  • 37
  • 27

5. How many bits are in a single hexadecimal digit?

  • 2 bits
  • 4 bits
  • 8 bits
  • 16 bits

6. What is the decimal equivalent of the hexadecimal number 1A?

  • 16
  • 26
  • 10
  • 27

7. How many unique values can be represented by 8 bits in binary?

  • 16
  • 64
  • 128
  • 256

8. What is the binary representation of the decimal number 42?

  • 101010
  • 101011
  • 110100
  • 110101

9. What is the hexadecimal equivalent of the binary number 11110000?

  • FF
  • 0F
  • F0
  • 0A

10. How many bits are in a byte?

  • 4 bits
  • 8 bits
  • 16 bits
  • 32 bits

11. In binary addition, what is the result of 1 + 1?

  • 0
  • 1
  • 2
  • 3

12. What is the largest decimal number that can be represented by 3 bits in binary?

  • 3
  • 7
  • 8
  • 15

13. What is the hexadecimal representation of the decimal number 255?

  • FF
  • 0F
  • F0
  • 0A

14. How many bits are in a nibble?

  • 2 bits
  • 4 bits
  • 8 bits
  • 16 bits

15. What is the binary representation of the hexadecimal number B3?

  • 10110011
  • 11001101
  • 10110101
  • 11010101

16. What is the decimal equivalent of the binary number 10010110?

  • 152
  • 166
  • 128
  • 150

17. What is the hexadecimal equivalent of the binary number 1111?

  • F
  • 1F
  • 11
  • 7

18. How many bits are in a double word (DWORD)?

  • 8 bits
  • 16 bits
  • 32 bits
  • 64 bits

19. What is the binary representation of the hexadecimal number 5A?

  • 10110100
  • 11010110
  • 01011010
  • 10101100

20. How many unique values can be represented by 16 bits in binary?

  • 64
  • 256
  • 512
  • 65536

21. What is the decimal equivalent of the binary number 11011011?

  • 219
  • 203
  • 218
  • 216

22. What is the hexadecimal equivalent of the binary number 10100111?

  • A7
  • 47
  • D3
  • 89

23. How many bits are in a nibble?

  • 2 bits
  • 4 bits
  • 8 bits
  • 16 bits

24. What is the binary representation of the hexadecimal number FFFF?

  • 11111111
  • 11111110
  • 11111100
  • 11111101

25. How many bits are in a word in most modern computer architectures?

  • 4 bits
  • 8 bits
  • 16 bits
  • 32 bits

26. What is the binary representation of the decimal number 63?

  • 00111110
  • 01111110
  • 10111110
  • 11111100

27. What is the hexadecimal equivalent of the binary number 11011010?

  • DA
  • 6D
  • A6
  • 26

28. How many unique values can be represented by 6 bits in binary?

  • 16
  • 32
  • 64
  • 128

29. What is the binary representation of the hexadecimal number 9F?

  • 10011111
  • 10011100
  • 10101111
  • 11001111

30. How many bits are in a byte?

  • 4 bits
  • 8 bits
  • 12 bits
  • 16 bits

31. What is the hexadecimal equivalent of the binary number 11101000?

  • E8
  • 38
  • 78
  • A8

32. How many bits are in a nibble?

  • 2 bits
  • 4 bits
  • 6 bits
  • 8 bits

33. What is the binary representation of the decimal number 128?

  • 1000000
  • 1010000
  • 1100000
  • 1110000

34. What is the hexadecimal representation of the binary number 101010101010?

  • A5A5
  • 5A5A
  • FFF0
  • 0101

35. How many unique values can be represented by 12 bits in binary?

  • 32
  • 64
  • 256
  • 4096

36. What is the decimal equivalent of the binary number 11111111?

  • 127
  • 255
  • 511
  • 1023

37. What is the hexadecimal equivalent of the binary number 11000111?

  • C7
  • 7C
  • 47
  • 71

38. How many bits are in a double word (DWORD)?

  • 8 bits
  • 16 bits
  • 32 bits
  • 64 bits

39. What is the binary representation of the hexadecimal number FF00?

  • 111100000000
  • 111111000000
  • 111111110000
  • 111100110000

40. How many unique values can be represented by 10 bits in binary?

  • 64
  • 128
  • 256
  • 1024

41. What is the decimal equivalent of the binary number 10110101?

  • 181
  • 197
  • 213
  • 245

42. What is the hexadecimal equivalent of the binary number 010101010101?

  • 55
  • AA
  • 5A
  • A5

43. How many bits are in a nibble?

  • 2 bits
  • 4 bits
  • 8 bits
  • 16 bits

44. What is the binary representation of the hexadecimal number 8D?

  • 10001001
  • 10101101
  • 11001000
  • 11011000

45. How many bits are in a byte?

  • 4 bits
  • 8 bits
  • 16 bits
  • 32 bits

46. What is the binary representation of the decimal number 20?

  • 10010
  • 10100
  • 11000
  • 11100

47. What is the hexadecimal equivalent of the binary number 11110011?

  • F3
  • 3F
  • E3
  • 33

48. How many unique values can be represented by 14 bits in binary?

  • 256
  • 512
  • 16384
  • 32768

49. What is the binary representation of the hexadecimal number CAFE?

  • 1100101011111110
  • 1110110010101111
  • 1010110011111110
  • 1010110010111110

50. How many bits are in a byte?

  • 4 bits
  • 8 bits
  • 12 bits
  • 16 bits

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