CSI Ch 2 Quiz Number Systems

1. A natural number, a negative of a natural number, or zero is a(n) _______ .

A. number B. natural number C. integer number D. negative number E. rational number

2. An integer or the quotient of two integers (division by zero excluded) is a(n) _______ .

A. number B. natural number C. integer number D. negative number E. rational number

3. A unit of an abstract mathematical system subject to the laws of arithmetic is a(n) _______ .

A. number B. natural number C. integer number D. negative number E. rational number

4. The number zero and any number obtained by repeatedly adding one to it is a(n) ________ .

A. number B. natural number C. integer number D. negative number E. rational number

5. A value less than zero, with a sign opposite to its positive counterpart, is a(n) _________ .

A. number B. natural number C. integer number D. negative number E. rational number

6. The most important reason that binary numbers are used to represent data in computers is because a binary number can be converted into every other base.

A. true B. false

7. Hexadecimal is the name of _____

A. numbers in base 8 B. numbers in base 2 C. numbers in base 16 D. numbers in base 10 E. magic numbers

8.A value of 1 in decimal is equivalent to a value of 1 in any other base.

A. true B. false

9. The decimal value of 8 is equivalent to the hexadecimal value of 8. A. true B. false 10.

8 is a valid digit in base 8. A. true B. false

11. The binary number 10001100 would be represented in hexadecimal as 8C. A. true B. false 12. A single binary digit is known as a(n) _______

A. nibble B. bit C. byte D. address 13. Starting from left to right, every grouping of four binary digits can be replaced by one hexadecimal digit. A. true B. false

14. A byte is made up of ____ consecutive binary digits. A. true B. false

15. One byte holds 2 hexadecimal digits. A. true

B. false 16. In the base 4 number system, a number is expressed using only these digits: 0, 1, 2, 3, and 4. A. true

B. false

17. Octal is the name of base 8. A. true

B. false

18. In a digital computer, only two states are possible: low-voltage and high-voltage. A low-voltage signal is represented with the digit 0 and a high-voltage signal with the digit 1. A. true B. false

19. The number system that we use in our daily lives is decimal, which is base ____

A. 2 B. 8 C. 10 D. 16

20. The number 111 in base 2 is equivalent to 7 in base 10. A. true B. false

21. The number A2F in base 16 is equivalent to 303 in base 10. A. true B. false

22. The number 501 in decimal is equivalent to 1F5 in base 16. A. true B. false

23. The number 9B in base 16 is equivalent to 10011011 in base 2. A. true B. false

24. The binary number that is one larger than the binary number 11 is 111. A. true B. false

25. 11002 + 2316 = 4710 . (The sum in base 10 of 1100 in base 2 plus 23 in base 16 is 47.) A. true B. false