# IT 254 Chapter 3

20) Which of the following is true? a) (0.1)2 > (0.1)8 b) (0.1)2 = (0.1)8 c) (0.1)2 < (0.1)8 d) None of these

a) (0.1)2 > (0.1)8

30) The octal number (1.2)8 is equivalent in decimal to a) 1.25 b) 8.16 c) 8.25 d) 12

a) 1.25

28) Ten raised to the power negative one (10^-1) is a) 1/10 b) -10 c) -1/10 d) None of these

a) 1/10

18) The base 2 number system is called a) binary b) fractal c) bitly d) radix

a) binary

14) A single digit that can have only one of two values, 0 or 1, is a a) bit b) blip c) signal d) character

a) bit

17) The base 8 number system is called a) octal b) fractal c) ochodecimal d) hexadecimal

a) octal

22) The "Exclusive OR" function (used for the result bit when adding single digits in binary) will equal 1 if the input bits are a) 0+0 b) 0+1 c) 1+1 d) None of these

b) 0+1

7) Eight raised to the power zero is a) 0 b) 1 c) 8 d) -8

b) 1

11) The octal number (12)8 is equivalent to the decimal number a) 9 b) 10 c) 24 d) 12

b) 10

6) The binary number (10110011)2 is equivalent to the decimal number a) 113 b) 179 c) 133 d) 10,110,011

b) 179

2) How many bytes does it take to store the binary equivalent of the decimal number 1945? a) 1 b) 2 c) 4 d) 10

b) 2

29) The binary number (10.01)2 is equivalent in decimal to a) 2.01 b) 2.25 c) 4.25 d) 10.01

b) 2.25

3) The largest number that can be represented 8 bits without considering a sign is a) 15 b) 255 c) 65,535 d) 10,000,000

b) 255

4) The largest single digit in octal is a) 1 b) 7 c) 8 d) 10

b) 7

24) The decimal number 9 is equivalent to the hexadecimal a) A b) 9 c) 10 d) 1001

b) 9

16) In order to multiply a number by its base we can perform a) a bit op b) a left shift c) a right shift d) a complex equation

b) a left shift

27) To convert from binary to hexadecimal by grouping, one hexadecimal digit corresponds to how many binary digits? a) two b) four c) eight d) sixteen

b) four

35) The number point (normally known by the name of the base—for example "decimal point" in base 10)—which divides whole numbers from fractional numbers is called a) bit point b) radix point c) fractal point d) division point

b) radix point

19) Which of the following is true? a) (1)2 < (1)8 b) (10)2 < (1)8 c) (101)2 < (10)8 d) (101)2 < (5)8

c) (101)2 < (10)8

21) Which of the following is true? a) (101)8 < (10)16 b) (10)8 < (1)16 c) (11)8 < (10)16 d) (12)8 < (A)16

c) (11)8 < (10)16

23) The "AND" function (used for the carry bit when adding single digits in binary) will equal 1 if the input bits are a) 0+0 b) 0+1 c) 1+1 d) None of these

c) 1+1

1) How many binary digits does it take to represent the decimal number 2013? a) 16 b) 8 c) 11 d) 2013

c) 11

31) The hexadecimal number (B.4)16 is equivalent in decimal to a) 10.25 b) 10.5 c) 11.25 d) None of these

c) 11.25

12) The hexadecimal number (1A)16 is equivalent to the decimal number a) 9 b) 17 c) 26 d) 110

c) 26

13) How many bits are there in one byte? a) 1 b) 4 c) 8 d) 10

c) 8

8) Eight raised to the power one is a) 0 b) 1 c) 8 d) -8

c) 8

5) The largest single digit in hexadecimal is a) 1 b) 8 c) F d) 9

c) F

15) In order to divide a number by its base we can perform a) a bit op b) a left shift c) a right shift d) a complex equation

c) a right shift

34) The number of different digits, including zero, that exist in the number system is the a) range b) field c) base d) parameter

c) base

33) The digit furthest to the right is usually the a) radix b) lightest bit c) least significant digit d) most significant digit

c) least significant digit

9) The number of different items that can be represented by a given number of digits, n, in a particular base, b, is given by the formula: b^n equals _____________. a) field b) radix c) range d) parameter

c) range

26) To convert from binary to octal by grouping, one octal digit corresponds to how many binary digits? a) one b) two c) three d) eight

c) three

32) The decimal fraction ¼ (0.25) is equivalent to a) (0.1)2 b) (0.1)8 c) (0.1)16 d) None of these

d) None of these

25) The base 16 number system is called a) octal b) fractal c) sextadecimal d) hexadecimal

d) hexadecimal

10) The digit with the greatest weight (value) in a number is called the a) radix b) heaviest bit c) least significant digit d) most significant digit

d) most significant digit