1. Which of the following is not a type of number system.
A. Positional
B. Non-Positional
C. Octal
D. Fractional
Answer = Fractional
2. How is the number 5 represented in non-positional number system.
A. IIIII.
B. 5.
C. V.
D. v
Answer = IIIII
3. The base is the total number of digits in a number system.
A. True
B. False
C. Nothing Can be said
D. None of the mentioned
Answer = True
4. The LSB and MSB of 1243247 are ____ and ____.
A. 1, 7.
B. 4, 7.
C. 7, 1.
D. 4, 1.
Answer = 7, 1
5. A device that uses positional notation to represent a decimal number.
A. Abacus
B. Calculator
C. Pascaline
D. Computer
Answer = Abacus
6. The 2’s complement of 5 is ______________.
A. 1011.
B. 101.
C. 1010.
D. 11.
Answer = 1011
7. What does BCD stand for.
A. Bitwise coded decimal
B. Binary coded decimal
C. Binary converted decimal
D. Bitwise Converted Decimal
Answer = Binary coded decimal
8. 1 zettabyte = ______________.
A. 1024 TB.
B. 1024 EB.
C. 1024 ZB.
D. 1024 PB.
Answer = 1024 EB
9. Perfrom BCD addition: 2+3= _______________.
A. 10.
B. 11.
C. 101.
D. 1010.
Answer = 101
10. ASCII stands for _____________________.
A. American standard code for information interchange
B. American scientific code for information interchange
C. American scientific code for international interchange
D. American standard code of international interchange
Answer = American standard code for information interchange
11. Which of the following is not a positional number system.
A. Roman Number System
B. Octal Number System
C. Binary Number System
D. Hexadecimal Number System
Answer = Roman Number System
12. The value of radix in binary number system is _____________.
A. 2.
B. 8.
C. 10.
D. 1.
Answer = 2
13. The binary equivalent of the decimal number 10 is __________.
A. 10.
B. 10.
C. 1010.
D. 10.
Answer = 1010
14. A computer language that is written in binary codes only is _____.
A. machine language
B. C.
C. C Sharp
D. pascal
Answer = machine language
15. The octal equivalent of 1100101.001010 is ______.
A. 624.12.
B. 145.12.
C. 154.12.
D. 145.21.
Answer = 145.12
16. The input hexadecimal representation of 1110 is _______________.
A. 111.
B. E.
C. 15.
D. 14.
Answer = E
17. Convert the binary equivalent 10101 to its decimal equivalent.
A. 21.
B. 12.
C. 22.
D. 31.
Answer = 21
18. Which of the following is not a binary number.
A. 1111.
B. 101.
C. 11E.
D. 0.
Answer = 11E
19. In the third option, there is an alphabet E present which makes it an invalid binary number Alphabets are only allowed in the hexadecimal number system.
A. Which of the following is the correct representation of a binary number.
B. (124)2.
C. 1110.
D. (110)2.
Answer = (110)2
20. What could be the maximum value of a single digit in an octal number system.
A. 8.
B. 7.
C. 6.
D. 5.
Answer = 7
21. The maximum number of bits sufficient to represent an octal number in binary is _______.
A. 4.
B. 3.
C. 7.
D. 8.
Answer = 3
22. The binary number 111 in octal format is ________________.
A. 6.
B. 7.
C. 8.
D. 5.
Answer = 7
23. Convert (22)8 into its corresponding decimal number.
A. 28.
B. 18.
C. 81.
D. 82.
Answer = 18
24. The octal equivalent of the binary number (0010010100)2 is ______________.
A. 422.
B. 242.
C. 224.
D. 226.
Answer = 224
25. Octal subtraction of (232)8 from (417)8 will give ______________.
A. 165.
B. 185.
C. 815.
D. 516.
Answer = 165
26. The 1’s complement of 0.101 is _________________.
A. 1.01.
B. 0.01.
C. 0.101.
D. 1.101.
Answer = 1.01
27. Convert (5401)8 to hexadecimal.
A. A01.
B. A02.
C. B01.
D. C01.
Answer = B01
28. Express the decimal format of the signed binary number (10010)2 ..
A. 2.
B. 12.
C. -12.
D. -2.
Answer = -2
29. What does the symbol D represent in a hexadecimal number system.
A. 8.
B. 16.
C. 13.
D. 14.
Answer = 13
30. ABC is a valid hexadecimal number.
A. True
B. False
C. Nothing Can be said
D. None of the mentioned
Answer = True
31. The maximum number of bits sufficient to represent a hexadecimal number in binary:.
A. 4.
B. 3.
C. 7.
D. 8.
Answer = 4
32. The binary number 1110 in hexadecimal format is _____________.
A. 6.
B. E.
C. 14.
D. 15.
Answer = E
33. Convert (52)16 into its decimal equivalent.
A. 28.
B. 83.
C. 80.
D. 82.
Answer = 82
34. The hexadecimal equivalent of the binary number (0010010100)2 is :.
A. 0B4.
B. 0A4.
C. 224.
D. 114.
Answer = 224
35. Hexadecimal Addition of (3A5)16 and (1B2)16 will give :.
A. 165.
B. 185.
C. 815.
D. 516.
Answer = 165
36. The 2’s complement of 10.11 :.
A. 10.
B. 0.01.
C. 1.01.
D. 10.01.
Answer = 10
37. Here, 10.11 gets converted to 01.00 in its 1’s complement format Further, to convert 1’s complement into 2’s, we add 1 to the result Here, 01.00+1=10.00..
A. Convert (6532)8 to hexadecimal.
B. A01.
C. A02.
D. B01.
Answer = A02
38. What do we call the point(decimal) in any hexadecimal number of the form 111.A3.
A. radix
B. hexadecimal point
C. decimal
D. octal point
Answer = hexadecimal point
39. The value of base in a decimal number system is ____________.
A. 8.
B. 2.
C. 10.
D. 16.
Answer = 10
40. The 2’s complement of 15 is ____________.
A. 0.
B. 1.
C. 10.
D. 100.
Answer = 1
41. Another name for base is __________.
A. root
B. radix
C. entity
D. median
Answer = radix
42. The decimal equivalent of (0.101)2 will be ____________.
A. 0.5.
B. 0.625.
C. 0.25.
D. 0.875.
Answer = 0.625
43. The signed magnitude for -3 will be ___________.
A. 11.
B. 10000011.
C. 11111101.
D. 11111100.
Answer = 10000011
44. A number with both integer and a fractional part has digits raised to both positive and negative powers of 2 in a decimal number system.
A. True
B. False
C. Nothing Can be said
D. None of the mentioned
Answer = False
45. The hexadecimal representation of 14 is _______________.
A. A.
B. F.
C. D.
D. E.
Answer = E
46. Which of the following is not a decimal number.
A. 114.
B. 43.47.
C. 99.9A.
D. 10101.
Answer = 99.9A
47. Select the incorrect option:.
A. (101)10 = (1100101)2.
B. G is valid in hexadecimal system.
C. C represents 12.
D. None of the mentioned
Answer = G is valid in hexadecimal system