Thẻ ghi nhớ: CSI104-chap3 | Quizlet

1. A byte consists of _______ bits.

a. 2

b. 4

c. 8

d. 16

c. 8

2. In a set of 64 symbols, each symbol requires a bit pattern length of _______ bits.

a. 4

b. 5

c. 6

d. 7

c. 6

3. How many symbols can be represented by a bit pattern with ten bits?

a. 128

b. 256

c. 512

d. 1024

d. 1024

4. If the ASCII code for E is 1000101, then the ASCII code for e is _______. Answer the question without consulting the ASCII table.

a. 1000110

b. 1000111

c. 0000110

d. 1100101

d. 1100101

5. A 32-bit code called _______ represents symbols in all languages.

a. ANSI

b. Unicode

c. EBCDIC

d. Extended ASCII

b. Unicode

6. An image can be represented in a computer using the _______ method.

a. bitmap graphic only

b. vector graphic only

c. Excess system only

d. either bitmap or vector graphic

d. either bitmap or vector graphic

7. In the _______ graphic method of representing an image in a computer, each pixel is assigned a bit patterns.

a. bitmap

b. vector

c. quantized

d. binary

d. binary

8. In the _______ graphic method of representing an image in a computer, the image is decomposed into a combination of geometrical figures.

a. bitmap

b. vector

c. quantized

d. binary

b. vector

9. In the _______ graphic method of representing an image in a computer, re-scaling of the image creates a ragged or grainy image.

a. bitmap

b. vector

c. quantized

d. binary

a. bitmap

10. When we want to store music in a computer, the audio signal must be _______.

a. sampled

a. only

b. quantized only

c. coded

c. only

d. sampled, quantized, and coded

d. sampled, quantized, and coded

11. A floating-point value after normalization is (1.0101) ´ 2-4.

What is the value of exponent section in the Excess-127 representation?

a. 4

b. -4

c. 127

d. 123

d. 123

12. Assume a new Excess system uses 17 bits to represent the exponent section. What is he bias value in this system?

a. 17

b. 16

c. 65535

d. 65536

c. 65535

13. Which number representation method is often used to store the exponential value of a fractional part?

a. unsigned integers

b. two's complement

c. Excess

d. ten's complement

c. Excess

14. In an Excess conversion, we _______ the number to be converted.

a. add the bias number to

b. subtract

b. the bias number from

c. multiply the bias number by

d. divide

d. the bias number by

a. add the bias number to

15. When a fractional part is normalized, the computer stores the _______.

a. only the sign

b. only the exponent

c. only the mantissa

d. the sign, exponent, and mantissa

d. the sign, exponent, and mantissa

16. The precision of the fractional part of a number stored in a computer is defined by the _______.

a. sign

b. exponent

c. mantissa

d. last digit

c. mantissa

17. The combination of sign and mantissa of a real number in IEEE standard floating point format is stored as an integer in the ____________ representation.

a. unsigned

b. sign-and-magnitude

c. two's complement

d. one's complement

b. sign-and-magnitude