Quizzes

Question 1

T/F: A software developer is the person with the training to design, create, and test computer programs.

Answer 1

True

Question 2

T/F: All programs are normally stored in ROM and are loaded into RAM as needed for processing.

Answer 2

False

Question 3

T/F: The CPU understands instructions written in a binary machine language.

Answer 3

True

Question 4

T/F: The main reason to use secondary storage is to hold data for long periods of time, even when the power supply to the computer is turned off.

Answer 4

True

Question 5

T/F: RAM is a volatile memory used for temporary storage while a program is running.

Answer 5

True

Question 6

T/F: The Python language uses a compiler which is a program that both translates and executes the instructions in a high-level language.

Answer 6

False

Question 7

T/F: IDLE is an alternative method to using a text editor to write, execute, and test a Python program.

Answer 7

True

Question 8

Programs are commonly referred to as

Answer 8

software

Question 9

Where does a computer store a program and the data that the program is working with while the program is running?

Answer 9

in main memory

Question 10

Which computer language uses short words known as mnemonics for writing programs?

Answer 10

Assembly

Question 11

The process known as the __________ cycle is used by the CPU to execute instructions in a program.

Answer 11

fetch-decode-execute

Question 12

The __________ coding scheme contains a set of 128 numeric codes that are used to represent characters in the computer’s memory.

Answer 12

ASCII

Question 13

The disk drive is a secondary storage device that stores data by __________ encoding it onto a spinning circular disk.

Answer 13

magnetically

Question 14

What is the decimal value of the following binary number?

10011101

Answer 14

157

Question 15

What is the largest value that can be stored in one byte?

Answer 15

255

Question 16

T/F: Comments in Python begin with the # character.

Answer 16

True

Question 17

T/F: When using the camelCase naming convention, the first word of the variable name is written in lowercase and the first characters of all subsequent words are written in uppercase.

Answer 17

True

Question 18

T/F: According to the behavior of integer division, when an integer is divided by an integer, the result will be a float.

Answer 18

False

Question 19

T/F: Python formats all floating-point numbers to two decimal places when outputting with the print statement.

Answer 19

False

Question 20

T/F: A flowchart is a tool used by programmers to design programs.

Answer 20

True

Question 21

T/F: In Python, math expressions are always evaluated from left to right, no matter what the operators are.

Answer 21

False

Question 22

T/F: Computer programs typically perform three steps: input is received, some process is performed on the input, and output is produced.

Answer 22

True

Question 23

What is the informal language, used by programmers use to create models of programs, that has no syntax rules and is not meant to be compiled or executed?

Answer 23

pseudocode

Question 24

The __________ function reads a piece of data that has been entered at the keyboard and returns that piece of data, as a string, back to the program.

Answer 24

input()

Question 25

In a print statement, you can set the __________ argument to a space or empty string to stop the output from advancing to a new line.

Answer 25

end

Question 26

After the execution of the following statement, the variable sold will reference the numeric literal value as (n) __________ data type.

sold = 256.752

Answer 26

float

Question 27

After the execution of the following statement, the variable price will reference the value __________.

price = int(68.549)

Answer 27

68

Question 28

What is the output of the following code?

val = 123.456789

print(f’{val:.3f}’)

Answer 28

123.457

Question 29

Which of the following will display 20%?

• print(f’{20:.0%}’)
• print(f’{0.2:.0%}’)
• print(f’{0.2 * 100:.0%}’)
• print(f’{0.2:%}’)

Answer 29

print(f’{0.2:.0%}’)

Question 30

What is the output of the following statement, given that value1 = 2.0 and value2 = 12?

print(value1 * value2)

• 24
• value1 * value2
• 24.0
• 2.0 * 12

Answer 30

24.0

Question 31

T/F: The Python language is not sensitive to block structuring of code.

Answer 31

False

Question 32

T/F: The if statement causes one or more statements to execute only when a Boolean expression is true.

Answer 32

True

Question 33

T/F: Python allows you to compare strings, but it is not case sensitive.

Answer 33

False

Question 34

T/F: Nested decision statements are one way to test more than one condition.

Answer 34

True

Question 35

T/F: Python uses the same symbols for the assignment operator as for the equality operator.

Answer 35

False

Question 36

T/F: Expressions that are tested by the if statement are called Boolean expressions.

Answer 36

True

Question 37

T/F: Decision structures are also known as selection structures.

Answer 37

True

Question 38

A(n) __________ structure is a logical design that controls the order in which a set of statements execute.

Answer 38

control

Question 39

Multiple Boolean expressions can be combined by using a logical operator to create __________ expressions.

Answer 39

compound

Question 40

When using the __________ logical operator, one or both of the subexpressions must be true for the compound expression to be true.

Answer 40

or

Question 41

A Boolean variable can reference one of two values which are

Answer 41

True or False

Question 42

What is the result of the following Boolean expression, given that x = 5, y = 3, and z = 8?

x < y or z > x

Answer 42

True

Question 43

What is the result of the following Boolean expression, given that x = 5, y = 3, and z = 8?

x < y and z > x

Answer 43

False

Question 44

In Python the __________ symbol is used as the not-equal-to operator.

Answer 44

!=

Question 45

In Python the __________ symbol is used as the equality operator.

Answer 45

==

Question 46

T/F: Reducing duplication of code is one of the advantages of using a loop structure.

Answer 46

True

Question 47

T/F: A good way to repeatedly perform an operation is to write the statements for the task once and then place the statements in a loop that will repeat as many times as necessary.

Answer 47

True

Question 48

T/F: In Python, an infinite loop usually occurs when the computer accesses an incorrect memory address.

Answer 48

False

Question 49

T/F: Both of the following for clauses would generate the same number of loop iterations.

for num in range(4):

for num in range(1, 5):

Answer 49

True

Question 50

T/F: In a nested loop, the inner loop goes through all of its iterations for each iteration of the outer loop.

Answer 50

True

Question 51

T/F: A while loop is called a pretest loop because the condition is tested after the loop has had one iteration.

Answer 51

False

Question 52

T/F: The integrity of a program’s output is only as good as the integrity of its input. For this reason, the program should discard input that is invalid and prompt the user to enter valid data.

Answer 52

True

Question 53

What type of loop structure repeats the code a specific number of times?

Answer 53

count-controlled loop

Question 54

What are the values that the variable num contains through the iterations of the following for loop?

for num in range(2, 9, 2):

Answer 54

2,4,6,8

Question 55

A variable used to keep a running total is called a(n)

Answer 55

accumulator

Question 56

A(n) __________ structure is a structure that causes a statement or a set of statements to execute repeatedly.

Answer 56

repetition

Question 57

In Python, a comma-separated sequence of data items that are enclosed in a set of brackets is called

Answer 57

list

Question 58

In Python, the variable in the for clause is referred to as the __________ because it is the target of an assignment at the beginning of each loop iteration.

Answer 58

target variable

Question 59

The first operation is called the __________ and its purpose is to get the first input value that will be tested by the validation loop.

Answer 59

priming read

Question 60

When will the following loop terminate?

while keep_going != 999:

Answer 60

when keep_going refers to a value equal to 999

Question 61

Which of the following is associated with a specific file and provides a way for the program to work with that file?

• filename
• file extension
• file object
• file variable

Answer 61

file object

Question 62

Which of the following describes what happens when a piece of data is written to a file?

• The data is copied from a variable in RAM to a file.
• The data is copied from a variable in the program to a file.
• The data is copied from the program to a file.
• The data is copied from a file object to a file.

Answer 62

The data is copied from a variable in RAM to a file.

Question 63

Which step creates a connection between a file and a program?

Answer 63

Open the file

Question 64

A(n) __________ access file is also known as a direct access file.

Answer 64

random

Question 65

A single piece of data within a record is called a

Answer 65

field

Question 66

Which mode specifier will erase the contents of a file if it already exists and create the file if it does not already exist?

Answer 66

w

Question 67

Which mode specifier will open a file but not let you change the file or write to it?

Answer 67

r

Question 68

Which method could be used to convert a numeric value to a string?

Answer 68

str

Question 69

Which method will return an empty string when it has attempted to read beyond the end of a file?

Answer 69

readline

Question 70

Which statement can be used to handle some of the runtime errors in a program?

Answer 70

a try/except statement

Question 71

Given that the customer file references a file object, and the file was opened using the ‘w’ mode specifier, how would you write the string ‘Mary Smith’ to the file?

Answer 71

customer.write(“Mary Smith”)

Question 72

T/F: If a file with the specified name already exists when the file is opened and the file is opened in ‘w’ mode, then an alert will appear on the screen.

Answer 72

False

Question 73

T/F: Closing a file disconnects the communication between the file and the program.

Answer 73

True

Question 74

T/F: The ZeroDivisionError exception is raised when the program attempts to perform the calculation x/y if y = 0.

Answer 74

True

Question 75

T/F: Strings can be written directly to a file with the write method, but numbers must be converted to strings before they can be written.

Answer 75

True

Question 76

T/F: The function header marks the beginning of the function definition.

Answer 76

True

Question 77

T/F: A local variable can be accessed from anywhere in the program.

Answer 77

False

Question 78

T/F: Python allows you to pass multiple arguments to a function.

Answer 78

True

Question 79

T/F: To assign a value to a global variable in a function, the global variable must be first declared in the function.

Answer 79

True

Question 80

T/F: A value-returning function is like a simple function except that when it finishes it returns a value back to the part of the program that called it.

Answer 80

True

Question 81

T/F: One of the drawbacks of a modularized program is that the only structure you can use in such a program is the sequence structure.

Answer 81

False

Question 82

T/F: One reason not to use global variables is that it makes a program hard to debug.

Answer 82

True

Question 83

What is a group of statements that exists within a program for the purpose of performing a specific task?

Answer 83

function

Question 84

A set of statements that belong together as a group and contribute to the function definition is known as a

Answer 84

block

Question 85

The _____________ keyword is ignored by the Python interpreter and can be used as a placeholder for code that will be written later.

Answer 85

pass

Question 86

The __________ of a local variable is the function in which that variable is created.

Answer 86

scope

Question 87

A(n) __________ is any piece of data that is passed into a function when the function is called.

Answer 87

argument

Question 88

When a function is called by its name during the execution of a program, then it is

Answer 88

executed

Question 89

The Python library functions that are built into the Python __________ can be used by simply calling the required function.

Answer 89

interpreter

Question 90

A(n) __________ chart is also known as a structured chart.

Answer 90

hierarchy

Question 91

What are the data items in a list called?

Answer 91

elements

Question 92

The primary difference between a tuple and a list is that

Answer 92

once a tuple is created, it cannot be changed

Question 93

Which list will be referenced by the variable number after the following code is executed?

number = range(0, 9, 2)

Answer 93

[0, 2, 4, 6, 8]

Question 94

Which method or operator can be used to concatenate lists?

Answer 94

+Which method can be used to convert a list to a tuple?

Question 95

Which method can be used to convert a list to a tuple?

Answer 95

tuple

Question 96

Which method can be used to convert a tuple to a list?

Answer 96

list

Question 97

T/F: Lists are dynamic data structures such that items may be added to them or removed from them.

Answer 97

True

Question 98

T/F: A list cannot be passed as an argument to a function.

Answer 98

False

Question 99

T/F: The remove method removes all occurrences of an item from a list.

Answer 99

False

Question 100

T/F: The index of the first element in a list is 1, the index of the second element is 2, and so forth.

Answer 100

False

Question 101

T/F: The index -1 identifies the last element in a list.

Answer 101

True

Question 102

T/F: To calculate the average of the numeric values in a list, the first step is to get the total of values in the list

Answer 102

True

Question 103

T/F: In order to create graphs using the matplotlib package, you need to import the pyplot module.

Answer 103

True

Question 104

T/F: The sort method rearranges the elements of a list so they are in ascending or descending order.

Answer 104

False

Question 105

T/F: In slicing, if the end index specifies a position beyond the end of the list, Python will use the length of the list instead.

Answer 105

True

Question 106

To refer to an item in a list, you code the list name followed by

Answer 106

an index number in brackets, starting with the number 0

Question 107

The __________ method adds an item to the end of a list.

Answer 107

append()

Question 108

Which of these methods would you use to insert the item “melon” after “grapes” in the following list?
fruit = [“apple”, “banana”, “grapes”, “mangos”, “oranges”]

Answer 108

fruit.insert(3, “melon”)

Question 109

Which of these methods would you use to remove the item “mangos” from the following list?
fruit = [“apple”, “banana”, “grapes”, “mangos”, “oranges”]

Answer 109

fruit.remove(“mangos”) or fruit.pop(3)

Question 110

The primary difference between a tuple and a list is that a tuple

Answer 110

is immutable

Question 111

Given the following list, what is the value of ages[5]?
ages = [22, 35, 24, 17, 28]

Answer 111

None, index error

Question 112

Given the following list, what is the value of names[2]?
names = [“Lizzy”, “Mike”, “Joel”, “Anne”, “Donald Duck”]

Answer 112

Joel

Question 113

To work with a file when you’re using Python, you must do all but one of the following. Which one is it?

Answer 113

decode the file

Question 114

Which of the following is not true about a CSV file?

• Each row or record in the file usually ends with a new line character.
• The columns or fields are usually separated by commas.
• The first line is ALWAYS a header line.
• To write data to a file, you need to get a writer object.

Answer 114

The first line is ALWAYS a header line.

Question 115

To determine the length of a string that’s in a variable named city, you can use

Answer 115

len(city)

Question 116

Which of the following symbols is used for string concatenation?

• *
• =
• +
• -

Answer 116

+

Question 117

Each item in a dictionary is

Answer 117

key-value pair

Question 118

To delete all items from a dictionary you can

Answer 118

use the clear() method

Question 119

How many items does the following dictionary contain?
flowers = {“red”: “rose”, “white”: “lily”, “yellow”: “buttercup”}

Answer 119

3

Question 120

The items() method returns a

Answer 120

object containing all of the key/value pairs in a dictionary