Quiz 6 Flashcards Preview

IT 101 > Quiz 6 > Flashcards

Flashcards in Quiz 6 Deck (15):
1

At least how many bits do we need to represent 40 unique things?

a. 6
b. 3
c. 4
d. 5
e. 7

6

2

Give the hexadecimal representation of 101100110101 (binary).

a. B35
b. 35C
c. A24
d. C35
e. 35B

B35

3

Determine the decimal value of 11001 (base 2, binary). Write your answer as a number without including any explanations and special symbols.

1+8+16
=25

4

What would the decimal value 17 look like in binary? Write your answer as a binary number without including any explanations and special symbols. Do not include leading zeros.

10001

5

If a computer uses 7 bits to represent integer values, what is the largest positive integer value that can be represented?

1111111
1+2+4+8+16+32+64
127

6

ASCII is a _____ bit code.

a. 32
b. 16
c. 64
d. 4
e. 7

7

7

_________________ is a type of code used to represent character data.

a. ASCII
b. Unicode
c. EBCDIC
d. All of the above are examples

All of the above are examples

8

Which of the following is true about ASCII?

a. It uses 16 bits to represent a character.
b. It can represent up to 52 different characters.
c. It is used only by IBM mainframes.
d. It is the “native tongue” of computer professionals.
e. None of the above is true.

None of the above is true.

9

A half-adder is a circuit that accepts ______ binary digit input values and gives two output values.

a. 0
b. 1
c. 2
d. 3
e. 4

2

10

The logical ________ operation produces true output value only if the input values are both true.

a. NOT
b. NAND
c. AND
d. NOR
e. OR

AND

11

Transistors are constructed from ____________, such as silicon and gallium arsenide.

a. magnetic cores
b. semiconductors
c. ionic crystals
d. integrated circuits
e. chips

semiconductors

12

What is the missing value in the flow (truth) table corresponding to an AND gate?
a b | a AND b
0 0 | 0
0 1 | 0
1 0 |
1 1 | 1

a. 2
b. It is all right.
c. 0
d. -1
e. 1

0

13

An expansion slot is located ____.

a. behind the monitor
b. in the serial port
c. on the motherboard
d. on the front of the computer
e. in the USB port

on the motherboard

14

Of the following, which represents the largest amount of data?

a. Kilobyte
b. Gigabyte
c. Megabyte
d. Terabyte
e. Petabyte

Petabyte

15

The four-step process of fetch, decode, execute, and store is called a(n):

a. logic cycle.
b. logical operation.
c. machine cycle.
d. arithmetic operation.
e. processing operation.

machine cycle.