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WGU Foundations of Computer Science Sample Questions:

1. What is the built-in data structure that implements a hash table in Python?

A) Tuple
B) Dictionary
C) List
D) Array

2. What is the expected output of calling .shape on a NumPy 2D array?

A) The number of rows and columns in the 2D array
B) The sum of the dimensions of the array
C) The total number of elements in the array
D) The type of elements in the array

3. What happens if one element of a NumPy array is changed to a string?

A) All elements in the array are coerced to integers.
B) All elements in the array are coerced to strings.
C) The array becomes a list of the original integers.
D) The operation is not allowed and raises an error.

4. Which sorting algorithm works by finding the smallest or largest element in an unsorted part of a list and moving it to the sorted part of the list?

A) Quicksort
B) Selection sort
C) Radix sort
D) Heap sort

5. What is the alternative way to access the third element of the first row in np_2d?

A) np_2d[2, 0]
B) np_2d[0, 2]
C) np_2d[3, 1]
D) np_2d[1, 3]

Solutions: