Computer Systems

Question 1

What are basic values or facts? They can be unstructured and lack context.

Answer 1

Data

Question 2

What data has been organized and/or processed in a way useful in solving some kinds of problems?

Answer 2

Information

Question 3

True or false
Information isn’t really needed, it’s just an option we can use to get more data but isn’t really helpful

Answer 3

False
Information is data that has been organized and/or processed in a way that is useful in organizing and/or processed in away that is useful in solving some kind of problem.
Helps us answer questions. (it “informs”)

Question 4

True or false?
Data must be structured and requires context

Answer 4

False.

Question 5

What is the definition of multimedia?

Answer 5

Several different data types

Question 6

What are some examples of things the computer stores, presents and helps modify different types of data?

Answer 6

Numbers, text, audio, images and graphics, and video.

Question 7

What Reduces the amount of space needed to store a piece of data

Answer 7

Data compression

Question 8

What decides the number of bits or bytes that can be transmitted from one place to another in a fixed amount of time?

Answer 8

Bandwidth

Question 9

What is the strategy size of the compressed data divided by the size of the uncompressed data?

Answer 9

Compression ratio

Question 10

A data compression technique in which there is no loss of information

Answer 10

Lossless

Question 11

What is a data compression technique in which there is a loss of information?

Answer 11

Lossy

Question 12

What is a continuous representation of data

Answer 12

Analog data

Question 13

What is a discrete representation of data?

Answer 13

Digital Data

Question 14

What does digitize data do?

Answer 14

Breaks it into pieces and representing those pieces separately

Question 15

What reason laces frequently used words with a single character?

Answer 15

Keyword encoding

Question 16

What takes repeated characters and replaces them with “Flag Characters”? (AKA recurring coding)?

Answer 16

Run length encoding

Question 17

What uses variable-length bit strings to represent each characters?

Answer 17

Huffman encoding

Question 18

Data items that are input can be stored in memory and can be ________ and converted to information that is output (fill in the blank)

Answer 18

Processed

Question 19

What are the 4 computer programs?

Answer 19

Data type
Literals
Variables
Named constants

Question 20

What is a named memory location whose contents can vary or differ over time and holds just one value at any moment in time?

Answer 20

Variables

Question 21

Why are variables used in a computer program?

Answer 21

They are able to be changed.

Question 22

What has a specification of the correct type for the variable, each used appropriately?

Answer 22

Data type Classification

Question 23

What has whole numbers without decimals?

Answer 23

Integer

Question 24

What has numbered values with decimals?

Answer 24

Float

Question 25

What is a number that doesn’t change?

Answer 25

Numerical constant OR Literal numeric constant

Question 26

What is a literal number that doesn’t not have an identifier like a variable?

Answer 26

Unnamed numeric constant

Question 27

What is made up of letters, numbers and symbols?

Answer 27

Characters

Question 28

What contains words but no numbers?

Answer 28

String

Question 29

What appears within quotes in computer programs?

Answer 29

String constant or literal string constant

Question 30

What is a literal string that does not have an identifier?

Answer 30

Unnamed string constant

Question 31

How many values can a variable hold?

Answer 31

Just one

Question 32

What is a statement that names a variable and its data types?

Answer 32

Declaration

Question 33

Where do you declare variables?

Answer 33

Before used for the first time

Question 34

What is a declaration of a starting value?

Answer 34

Initial Value

Question 35

What declares a variable and does not initialize it?

Answer 35

Garbage

Question 36

What is an operate that assigns a value to the memory location on its left side; the equal sign?

Answer 36

Assignment operator

Question 37

What requires two operands, one on each side?

Answer 37

Binary Operator

Question 38

What has operators that evaluate expressions to the right side first?

Answer 38

Right to right OR right associativity

Question 39

What are values by an operator?

Answer 39

Operand

Question 40

Operand to the right of the assignment operator must be:________

Answer 40

A value

Question 41

Operand to the left of the assignment operator must be:______

Answer 41

A name that represents a memory address

Question 42

A variable must be one:_____

Answer 42

Word

Question 43

Variable names must start with a letter:_______

Answer 43

Letter

Question 44

What is a plan for a solution?

Answer 44

Algorithm

Question 45

What is a language that allows for expressing algorithms in a clear-cut process?

Answer 45

Psuedocode

Question 46

Variables in pseudocode refer to places in:_______

Answer 46

Memory where values are stored

Question 47

If you use variables, best practice s to assign a value to the variable using an______

Answer 47

Initialization statement

Question 48

What takes values from the outside and puts the results on the screen?

Answer 48

Input/Output

Question 49

What allows a choice between performing an action and skipping it?

Answer 49

Repetition (iteration)

Question 50

If the expression beside the _______is true the indented code is executed

Answer 50

While Loop

Question 51

Nongovernmental organization recognizing someone having met predetermined qualifications is a:______

Answer 51

Certification

Question 52

Government grant of legal authority (non voluntary) is a:________

Answer 52

Licensing

Question 53

Are computer professional required to be licensed?

Answer 53

No

Question 54

Are computer professionals required to be certified?

Answer 54

No

Question 55

What is a high-level action is an algorithm that describes what needs to be done without detailing how to do it?

Answer 55

Abstract step

Question 56

What is a point in an algorithm where decision is made, leading to different actions based on conditions?

Answer 56

Branch

Question 57

What is a loop that never ends because the termination condition is never met or is incorrectly written?

Answer 57

Infinite loop

Question 58

What is data that are provided to a program for processing?

Answer 58

Input

Question 59

What is a variable that determines whether the loop will continue running or stop, often incremented or modified within the loop?

Answer 59

Loop controlled variable

Question 60

What is a programming construct where one control structure (like a loop or a conditional statement) is placed inside another?

Answer 60

Nested structure

Question 61

What is data that are produced by a program and presented to a user or another system?

Answer 61

Output

Question 62

What is a loop that evaluates its conditions before executing the body of the loop, such as a whole loop?

Answer 62

Protest loop