COMP 1405 - Review Session Multiple Choice Questions

JavaScript isn't enabled in your browser, so this file can't be opened. Enable and reload.

Note: these are created by a student, and are more meant for concept review, as opposed to being directly representative of the final

Given a 2D matrix ‘matrix = [[1, 2, 3], [4, 5, 6], [7, 8, 9]]’, what is the result of ‘matrix[1][2]’?

1 point

Clear selection

What is the result of the expression 'a+b' where 'a = [1,2,3]' and 'b = [4,5,6]'?

1 point

'[1, 2, 3, 4, 5, 6]'

'[[1, 2, 3], [4, 5, 6]]'

'[5, 7, 9]'

Error

Clear selection

In Python, what is the purpose of the 'del' statement concerning variables?

1 point

To declare a new variable

To delete a variable from memory

To create a copy of a variable

To check if a variable exists

Clear selection

What is the dimension of the matrix ‘[[1, 2, 3], [4, 5, 6]]’?

1 point

2x2

2x3

3x2

3x3

Clear selection

In recursive programming, what is the purpose of a base case?

1 point

To define the starting point of recursion

To specify the condition that prevents further recursion

To optimize the performance of recursive algorithms

To ensure that the recursion runs indefinitely

Clear selection

What characterizes the evolution of the product in the iterative approach?

1 point

The product is developed in a single, linear path.

The product evolves through repeated cycles of development and refinement.

The product remains unchanged until the end of the project.

The product evolves only during the testing phase

Clear selection

How many times will the following 'for' loop iterate?

for i in range(3):

print(i)

1 point

Clear selection

What method do you use to remove the key-value pair ‘age’: 30 from the dictionary ‘employee_info’ = {‘name’: ‘John’, ‘age’: ‘30’}?

1 point

‘employee_info.delete(‘age’)’

‘employee_info.remove(‘age’)’

‘employee_info.pop(‘age’)’

‘del employee_info[‘age’]’

Clear selection

What is the output of the following following 'for' loop?

for i in range(1, 5, 2):

print(i)

1 point

1 2 3 4

1 3

2 4

1 2 3

Clear selection

Which representation is more efficient for checking the existence of an edge between two vertices?

1 point

Adjacency matrix

Adjacency list

Both are equally efficient

It depends on the size of the graph

Clear selection

Given a 2D matrix ‘matrix = [[1, 2, 3], [4, 5, 6], [7, 8, 9]]’, what does ‘matrix[1:][0]’ result in?

1 point

'[4, 5, 6]'

'[1, 2, 3]'

'[7, 8, 9]'

'[4, 5]'

Clear selection

How does the number of comparisons performed by selection sort compare to bubble sort for the same input?

1 point

Fewer comparison in general

The same number of comparisons

More comparisons in general

It depends on the specific input

Clear selection

What does the expression 'hello'* 3 evaluate to?

1 point

'hellohellohello'

'['hello', 'hello', 'hello']'

'15'

Error

Clear selection

Which of the following is an example of an immutable data type in Python

1 point

List

Dictionary

Tuple

Matrix

Clear selection

How do you check if an element exists in a list 'my_list'?

1 point

'element in my_list'

'my_list.exists(element)'

'my_list.contains(element)'

'my_list.check(element)'

Clear selection

What is the primary goal of the iterative approach in project management?

1 point

To complete the project as quickly as possible.

To minimize changes during the project.

To deliver a working product incrementally.

To strictly adhere to the initial project plan.

Clear selection

How do you remove an element at a specific index from a list 'my_list'?

1 point

'my_list.remove(index)'

'my_list.pop(index)'

'my_list.delete(index)'

'my_list.extract(index)'

Clear selection

This recursive function correctly reverse a given string ‘s’

def reverse_string(s):

if len(s) == 1:

return ""

return reverse_string(s[1:]) + s[0]

1 point

True

False

Clear selection

How do you check if a key ‘salary’ exists in the dictionary ‘employee_info = {‘name’: ‘John’, ‘age’: ‘30’}’

1 point

‘‘salary’ in employee_info’

‘employee_info.exists(‘salary’)’

‘’salary’ == employee_infor.key’

‘employee _info.contains(‘salary’)’

Clear selection

What data type is the result of the expression '5/2' in Python?

1 point

integer

floating point

boolean

double

Clear selection

What does the expression '"hello world".split()' return?

1 point

'["hello", "world"]'

"helloworld"

'["hello world"]'

Error

Clear selection

What is the output of the following code snippet?

________

x = 8

y = 3

result = x/y

print(result)

1 point

2.6666666666666665

2.67

Clear selection

When is insertion sort most efficient in terms of time complexity?

1 point

When the array is in reverse order

When the array is already sorted

When the array contains a mix of sorted and unsorted elements

When the array has a small number of elements

Clear selection

When is a recursive approach appropriate to use?

1 point

When the problem can be decomposed into smaller subproblems of the same type

When the recursive solution is more memory efficient than the iterative one

When a recursive approach takes less time to execute

All of the above

Two of three above

None of the above

Clear selection

What is the “worst-case” number of passes that a bubble sort performs in order to sort an array of length n?

1 point

n-1

n^2

Clear selection

In iterative project management what is the role of planning throughout the project lifecycle?

1 point

Planning is only done at the beginning of the project

Planning is done once, and changes are not allowed

Planning is performed iteratively, adapting to changes as needed

Planning is unnecessary in the iterative approach

Clear selection

What if the purpose of the 'continue' statement in a 'while' loop?

1 point

It is used to exit the loop

It is used to skip the rest of the code in the loop and move to the next iteration

It is used to restart the loop

It is used to terminate the entire program

Clear selection

What is the purpose of the 'break' statement in a 'while' loop?

1 point

It is used to skip the rest of the code in the loop and move to the next interation

It is used to terminate the entire program

It is used to exit the loop prematurely

It is used to restart the loop

Clear selection

What is the primary purpose of the 'type()' function in Python?

1 point

To convert a variable to a different data type

To check the data type of a variable

To define a new data type

To perform mathematical operation on variables

Clear selection

What are the goals of iterative approaches?

1 point

To discuss requirements

To remain flexible

To allow goals to evolve

To catch problems early

All of the above

None of the above

Clear selection

Which of the following is the correct Python code to calculate when dividing 17 by 4?

1 point

‘result = 17 / 4’

‘result = 17 % 4’

‘result = 17 // 4’

‘result = 17 * 4’

Clear selection

Which method is used to convert a string to lowercase?

1 point

'toLower()'

'lower()'

'covertToLower()'

'toLowerCase()'

Clear selection

What is the purpose of the 'elif'(else if) clause in an 'if-elif-else' statement?

1 point

It is used to define a condition

It is executed when the condition in the 'if' statement is True

It is executed when the condition in the 'if' statement is False

It is used to check additional conditions if the preceding ones are False

Clear selection

How do you add a new row ‘[10, 11, 12]’ to the matrix ‘[[1, 2, 3], [4, 5, 6], [7, 8, 9]]’?

1 point

‘matrix.append([10, 11, 12])’

‘matrix.insert(3, [10, 11, 12])’

‘matrix.extend([10, 11, 12])’

‘matrix.add_row([10, 11, 12])’

Clear selection

How are edge weights typically stored in adjacency lists?

1 point

As additional entries in the adjacency lists.

As a separate matrix

As labels on the nodes

Edge weights cannot be stored in adjacency lists.

Clear selection

Consider the following nested if-else statement:

x = 10

y = 5

if x>5:

if y>3:

results = "A"

else:

result = "B"

else:

result = "C"

1 point

"A"

"B"

"C"

Error

Clear selection

What is the difference between '==' and 'is' when comparing variables in Python?

1 point

'==' used to see if the objects referenced are considered equal, 'is' check if two variables are the same object

'==' and 'is' are used interchangeably for variable comparison

'==' and 'is' both check for the same thing

'==' checks for the same memory address, and 'us' checks for the equality of values

Clear selection

What does the 'append()' method do for a list?

1 point

Inserts an element at a specific index

Adds a new list to the existing list

Adds an element to the end of the list

Removes the last element from the list

Clear selection

What does the expression '5>3 or 2<1'

1 point

True

False

Clear selection

In Python, what is the purpose of the 'assert' statement?

1 point

It is used to define a conditional statement

It is used to raise an exception if a condition is False

It is used to create a loop

It is used to skip the rest of the code in a loop

Clear selection

Given a dictionary ‘student = {‘name’: ‘Alice’, ‘age’: 22, ‘grade’: ’A’}’, how do you access Alice’s age?

1 point

'student('age')'

'student['age']'

'student.get('age')'

'student.age'

Clear selection

What does the expression '4+5*2/2'

1 point

Clear selection

What is the scope of a variable in Python?

1 point

The range of values it can store

The number of times it can be used in a program

The part of the program where the variable can be accessed

The memory address it is assigned

Clear selection

What is the result of the expression ‘5 + 3 * 2 ’?

1 point

Clear selection

In the worst-case scenario, when is bubble sort the most efficient?

1 point

When the array is already sorted

When the array is in reverse order

When the array contains a mix of sorted and unsorted elements

When the array has a smaller number of elements

Clear selection

Which representation allows for easier addition of new vertices in a graph?

1 point

Adjacency matrix

Adjacency list

Both have the same level difficulty

Neither can handle adding new vertices

Clear selection

How can you concatenate two strings 'str1' and 'str2'?

1 point

'str1.concat(str2)'

'str1.join(str2)'

'str1+str2'

'concat(str1, str2)'

Clear selection

Which of the following is the correct way to calculate the floor division of 10 by 3 in Python?

1 point

‘result = 10 / 3’

‘result = 10 % 3’

‘result = 10 // 3’

‘result = 10 * 3’

Clear selection

What is the difference between iterations and increments in an iterative project?

1 point

Iterations focus on completing the entire project, while increments focus on individual features.

Iterations are time-based cycles, while increments are functional deliverables

Iterations and increments are interchangeable terms

Iterations refer to small changes, while increments refer to refer to major project phases

Clear selection

What is the output of the following nested 'for' loop?

for i in range(2):

for j in range(3):

print(i+j, end = " ")

1 point

0 1 2 1 2 3

0 1 2 3 4 5

0 2 4 1 3 5

1 3 5 2 4 6

Clear selection

What does the expression 'len('Python')' return?

1 point

'6'

'7'

'5'

Error

Clear selection

What is the purpose of the 'else' clause in an 'if-else' statement?

1 point

It is used to define a condition

It is executed when the condition in the 'if' statement is True

Is is executed when the condition in the 'if' statement is False

It is used to create a loop

Clear selection

Which of the following statements is true regarding the 'range' function in a 'for' loop?

1 point

It generates a list of numbers

It is used to create an infinite loop

It specified the start, stop, and step values for the loop

It is used to exit the loop prematurely

Clear selection

In Python, what is the purpose of the 'id()' function when applied to a variable?

1 point

To get the memory address of the variable

To check if the variable is initialized

To delete the variable from memory

To get the length of the variable

Clear selection

Which of the following data types is mutable in Python?

1 point

Tuple

String

List

Clear selection

Submit

Clear form

This content is neither created nor endorsed by Google. Report Abuse - Terms of Service - Privacy Policy

Forms