WGU Foundations of Computer Science - Foundations-of-Computer-Science Exam Questions [2026]

QUESTION NO: 1
What is the correct way to convert an integer to a string in Python?

A. int_to_str(variable) B. tostring(variable) C. string(variable) D. str(variable)

Correct Answer: D

Explanation: Only visible for Pass4Test members. You can sign-up / login (it's free).

QUESTION NO: 2
What is the layer of programming between the operating system and the hardware that allows the operating system to interact with it in a more independent and generalized manner?

A. The hardware abstraction layer B. The task scheduler layer C. The boot loader layer D. The file system layer

Correct Answer: A

Explanation: Only visible for Pass4Test members. You can sign-up / login (it's free).

QUESTION NO: 3
Which type of files are meant to be inaccessible to standard users, but can be critical in terms of functionality?

A. System files B. Extension files C. Backup files D. Log files

Correct Answer: A

Explanation: Only visible for Pass4Test members. You can sign-up / login (it's free).

QUESTION NO: 4
What is the main advantage of using NumPy arrays over regular Python lists for data analysis?

A. NumPy arrays can bring different types into the array at the same time. B. NumPy arrays can concatenate lists by default. C. NumPy arrays can only hold elements of the same type. D. NumPy arrays can perform calculations over entire collections of values.

Correct Answer: D

Explanation: Only visible for Pass4Test members. You can sign-up / login (it's free).

QUESTION NO: 5
Which Python function would be used to check the data type of a variable bmi?

A. type(bmi) B. typeof(bmi) C. datatype(bmi) D. check(bmi)

Correct Answer: A

Explanation: Only visible for Pass4Test members. You can sign-up / login (it's free).

QUESTION NO: 6
What happens if you try to create a NumPy array with different types?

A. The array will be created with no issues. B. The array will be split into multiple arrays, one for each type. C. The array will contain a single type, converting all elements to that type. D. The array will be created, but calculations will not be possible.

Correct Answer: C

Explanation: Only visible for Pass4Test members. You can sign-up / login (it's free).

QUESTION NO: 7
Which line of code below contains an error in the use of NumPy?

A. arr = np.array([3, 2, 0, 1]) B. import numpy as np C. wgu_list = np.quicksort(arr) D. print(wgu_list)

Correct Answer: C

Explanation: Only visible for Pass4Test members. You can sign-up / login (it's free).

QUESTION NO: 8
What is the expected result of running the following code: list1[0] = "California"?

A. A new list will be created with the value "California". B. A second element will be added to the line "California". C. The list will be extended by adding "California" at the end. D. The first value in the list will be replaced with "California".

Correct Answer: D

Explanation: Only visible for Pass4Test members. You can sign-up / login (it's free).