ELT 2 Test Review

Question 1

A system of numbers used for coding computers

Answer 1

Positional numbering system

Question 2

What are the 3 states of data

Answer 2

At rest, in use, and in transit

Question 3

What is the RGB color code for black

Answer 3

(0,0,0)

Question 4

What is the RGB color code for white

Answer 4

(255,255,255)

Question 5

Each character needs ______ bytes of data

Answer 5

1

Question 6

1 pixel need _______ bytes of data

Answer 6

3

Question 7

True/False

A space is not a character

Answer 7

False

Question 8

10 letters = 10 bytes = _______ bits

Answer 8

80

Question 9

What color is this

(25,75,25)

Answer 9

Green

Question 10

What color is this

(35,EA,57)

Answer 10

Green

Question 11

A chip can contain thousands to billions of transistors

True/false

Answer 11

True

Question 12

Today, transistors are microscopic

True/false

Answer 12

True

Question 13

Computer memory is infinite

True/false

Answer 13

False

Question 14

A monitor displays text and images by lighting up thousands of ________ with different colors

Answer 14

Pixels

Question 15

Input ports allow for ________

Answer 15

Portable secondary storage

Question 16

To the computer, all secondary storage acts the same way

True/false

Answer 16

True

Question 17

The CPU contains all the circuitry needed to process input, store data, and output the results

True/false

Answer 17

True

Question 18

To the computer, hard drives and USB store data very differently

True/false

Answer 18

False

Question 19

The CPU contains an ALU (Arithmetic logic unit) that knows how to add numbers

True/false

Answer 19

True

Question 20

Computer microchips only contain one transistor

True/false

Answer 20

False

Question 21

When input devices send binary data to a CPU, it immediately stores that data in memory to make it easier to process

True/false

Answer 21

True

Question 22

As long as the output device can interpret a stream of 1s and 0s, it turn that data into anything

True/false

Answer 22

True

Question 23

Hard drive is permanently attached primary storage

True/false

Answer 23

False

Question 24

Once the CPU is done processing the data, it often needs to _______

Answer 24

Output a result

Question 25

Another name for a chip is _______

Answer 25

Integrated circuit

Question 26

All computers are made up of ________, _________ and ________

Answer 26

Processor (CPU), memory, and input/output devices

Question 27

The CPU gives computer programs their instructions True/false

Answer 27

False

Question 28

How do you covert binary to decimal

Answer 28

Add all the 1 values in the binary sequence

Question 29

How do you covert decimal to binary

Answer 29

Money/counting method

Question 30

How do you covert decimal to hex

Answer 30

Convert to binary, then split the binary, then find the 2 values of the 1s, and then combine (not add) the numbers next to each other

Question 31

How do you covert hex to decimal

Answer 31

Split the hex, then convert to binary, then add up the 1 values in the binary sequence