Exam

Name___________________________________

MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question.
1)	The ASCII code is an alphanumeric code that has 27 = 128 possible code groups. How many bits are required to accommodate 128 different code groups?	1) ______

	A)  7
	B)  9
	C)  8
	D)  6

2)

Select the correct transmission code group for a hexadecimal value of 52 if the even parity method of error detection is used. The parity bit is to the left of the code MSB.

2) ______

	A)  1101000
	B)  01010010
	C)  11010010
	D)  01010001

3)

How many bytes are required to represent the decimal number 107 in binary?

3) ______

	A)  3
	B)  2
	C)  4
	D)  1

4)

Convert 1111111112 to its decimal equivalent.

4) ______

	A)  511
	B)  1,023
	C)  255
	D)  2,047

5)

How many binary digits make up a byte?

5) ______

	A)  8
	B)  32
	C)  4
	D)  16

6)

Which of the following decimal numbers is represented by the binary bits 10112?

6) ______

	A)  9
	B)  15
	C)  11
	D)  13

7)

What is the largest decimal number that can be represented using five binary bits?

7) ______

	A)  31
	B)  64
	C)  63
	D)  32

8)

The binary equivalent for 16910 is:

8) ______

	A)  011111011
	B)  11101101
	C)  11010111
	D)  10101001

9)

The uppercase letter Q has an ASCII code of 101 0001. What is the hexadecimal representation of this value?

9) ______

	A)  51
	B)  50
	C)  4F
	D)  4E

10)

The binary equivalent for DFA16 is:

10) ______

	A)  1110101110102
	B)  1101111110102
	C)  1111011001012
	D)  0110110110112

11)

Which of the following represents the correct counting sequence from FEE16?

11) ______

	A)  FF0, FF1, FF2, FF3, FF4, FF5
	B)  FEF, FFF, 1FF0, 1FF1, 1FF2, 1FF3
	C)  FED, FEC, FEB, FEA, FEA, FFB
	D)  FEF, FF0, FF1, FF2, FF3, FF4

12)

How many different numbers can be represented using eight bits?

12) ______

	A)  256
	B)  64
	C)  128
	D)  512
	E)  none of the above

13)

Which of the following represents the correct counting sequence from 9FE16?

13) ______

	A)  9FF, A00, A01, A02, A03, A04
	B)  9FF, 1AF0, 1AF1, 1AF2, 1AF3, 1AF4
	C)  9FF, 1A00, 1A01, 1A02, 1A03, 1A04
	D)  AFF, 1AF0, 1AF1, 1AF2, 1AF3, 1AF4

14)

The hexadecimal equivalent for 1100 1010 0111 10012 is:

14) ______

	A)  DA87
	B)  DA79
	C)  CA79
	D)  CA87

15)

What is the binary equivalent of the decimal value 437?

15) ______

	A)  110110101
	B)  101111111
	C)  11111100
	D)  101101011

16)

How many different numbers can be obtained using five binary bits?

16) ______

	A)  31
	B)  63
	C)  32
	D)  64

17)

How many bytes are in the hexadecimal number 7CBD03?

17) ______

	A)  5
	B)  4
	C)  3
	D)  6
	E)  none of the above

18)

Convert 110011012 to its decimal equivalent using the sum-of-weights position method.

18) ______

	A)  409
	B)  410
	C)  205
	D)  207

19)

Convert the decimal value 1079 to binary.

19) ______

	A)  100000101112
	B)  110000101112
	C)  100101001112
	D)  100001101112

20)

What is the minimum number of binary bits required to represent a count of 17510?

20) ______

	A)  7
	B)  8
	C)  5
	D)  6

21)

What is the decimal equivalent of 74A16?

21) ______

	A)  1,579
	B)  1,866
	C)  29,856
	D)  3,512

22)

How many bits are required to code each digit using the BCD numbering system?

22) ______

	A)  2
	B)  6
	C)  4
	D)  8

23)

What is the decimal weight of the MSB in a 12-bit number?

23) ______

	A)  1,024
	B)  8,192
	C)  4,096
	D)  2,048

24)

What is the largest decimal value that can be represented using nine binary bits?

24) ______

	A)  1023
	B)  512
	C)  511
	D)  1024

25)

The decimal equivalent of E16 is:

25) ______

	A)  15
	B)  13
	C)  12
	D)  14

26)

The hexadecimal equivalent of 011110111012 is:

26) ______

	A)  5B7
	B)  3DD
	C)  DD3
	D)  7B5

27)

Having counted up to 10011012, what value comes next?

27) ______

	A)  10011102
	B)  10100102
	C)  11000102
	D)  11100102

28)

The hexadecimal equivalent of 15,90710 is:

28) ______

	A)  3D23
	B)  3C23
	C)  3B23
	D)  3E23

29)

What is the decimal equivalent of the binary number 1100112?

29) ______

	A)  39
	B)  29
	C)  51
	D)  49

30)

The decimal number 208,973 has a hexadecimal equivalent of:

30) ______

	A)  630,115
	B)  33,04D
	C)  631,721
	D)  33,3D1

TRUE/FALSE. Write 'T' if the statement is true and 'F' if the statement is false.
31)	Binary digits are called bits.	31) ______

32)

The output unit of a PC performs calculation and logical decisions.

32) ______

33)

11002 = 1210

33) ______

34)

A bit consists of 8 bytes.

34) ______

35)

The hexadecimal equivalent of a decimal number contains more digits than the original decimal number.

35) ______

36)

The decimal number 271 can be converted to an 8-bit equivalent.

36) ______

37)

The binary equivalent of 3710 is 111001111110.

37) ______

38)

Zeros must be added to the left of the MSB to produce even groups of 4 bits when converting from binary to hexadecimal.

38) ______

39)

When dealing with a large binary number, it is usually easier to write the number as a string of bits rather than go through the complicated process of converting the binary number to hexadecimal.

39) ______

40)

11112 = 1010

40) ______