1. The base of the binary number system is:
A. 2
B. 10
C. 8
D. 16
Answer: A. 2
2. The base of the decimal number system is:
A. 2
B. 8
C. 10
D. 16
Answer: C. 10
3. The base of the hexadecimal number system is:
A. 2
B. 8
C. 10
D. 16
Answer: D. 16
4. Which of the following is the correct hexadecimal representation for the decimal number 15?
A. F
B. E
C. 10
D. 9
Answer: A. F
5. The hexadecimal digits go from 0 to:
A. 8
B. 9
C. A
D. F
Answer: D. F
6. The binary number 1101 is equivalent to which decimal number?
A. 13
B. 14
C. 12
D. 11
Answer: A. 13
7. The decimal number 25 is equivalent to which binary number?
A. 11001
B. 10101
C. 11101
D. 11010
Answer: A. 11001
8. The hexadecimal number A3 is equivalent to which decimal number?
A. 163
B. 123
C. 133
D. 113
Answer: A. 163
9. Convert the binary number 101101 to decimal. What is the result?
A. 43
B. 45
C. 44
D. 47
Answer: B. 45
10. What is the binary equivalent of the decimal number 50?
A. 110010
B. 111010
C. 101010
D. 101100
Answer: A. 110010
11. What is the hexadecimal equivalent of the binary number 10110111?
A. A7
B. B7
C. C7
D. D7
Answer: A. A7
12. Convert the decimal number 255 to hexadecimal. What is the result?
A. FF
B. F0
C. 00
D. 10
Answer: A. FF
13. What is the binary equivalent of the hexadecimal number 3F?
A. 111111
B. 111110
C. 110111
D. 101111
Answer: A. 111111
14. Convert the hexadecimal number 7A to binary. What is the result?
A. 1111010
B. 1111011
C. 1111100
D. 1111101
Answer: A. 1111010
15. Which of the following binary numbers is equivalent to the hexadecimal number C2?
A. 11000010
B. 11000011
C. 11000001
D. 11000000
Answer: A. 11000010
16. Which of the following binary numbers is equivalent to the decimal number 18?
A. 10010
B. 10011
C. 10100
D. 10101
Answer: A. 10010
17. Convert the hexadecimal number 5D to decimal. What is the result?
A. 93
B. 96
C. 101
D. 104
Answer: A. 93
18. Convert the binary number 111000 to hexadecimal. What is the result?
A. E0
B. F0
C. C0
D. D0
Answer: A. E0
19. What is the binary equivalent of the hexadecimal number 9F?
A. 10011111
B. 11011111
C. 10111111
D. 11111111
Answer: A. 10011111
20. What is the decimal equivalent of the binary number 101010?
A. 42
B. 44
C. 45
D. 47
Answer: A. 42
21. What is the result of adding the binary numbers 1011 and 1101?
A. 10100
B. 10110
C. 11000
D. 11100
Answer: A. 10100
22. Subtract the binary number 10101 from 11011. What is the result?
A. 1000
B. 1100
C. 1110
D. 1010
Answer: A. 1000
23. What is the result of multiplying the binary numbers 101 and 11?
A. 1111
B. 1101
C. 1011
D. 1001
Answer: A. 1111
24. Divide the binary number 11010 by 10. What is the quotient?
A. 1101
B. 1110
C. 1011
D. 1010
Answer: A. 1101
25. The base-2 system is also called the:
A. Decimal system
B. Binary system
C. Octal system
D. Hexadecimal system
Answer: B. Binary system
26. The decimal number 100 in hexadecimal is:
A. 64
B. 99
C. 64
D. 64
Answer: B. 64
27. Convert the binary number 11100001101 to hexadecimal. What is the result?
A. E1D
B. E1C
C. E2D
D. D2C
Answer: A. E1D