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WGU Foundations of Computer Science Sample Questions:

1. Which order is impossible when traversing a binary tree using depth first search?

A) In-order traversal
B) Level-order traversal
C) Post-order traversal
D) Pre-order traversal

2. What stores the location of the next node in a linked list?

A) The value
B) The header
C) The index
D) The pointer

3. Which line of code below contains an error in the use of NumPy?

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

4. Which file system is commonly used in Windows and supports file permissions?

A) NTFS
B) HFS+
C) FAT32
D) EXT4

5. What is the expected result of running the following code: list1[0] = "California"?

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

Solutions: