WGU University WGU-SPF Online Practice Questions and Exam Preparation

WGU University WGU-SPF Online Questions & Answers

• Question 131:

  Which expression has a value equal to the rightmost digit of the integer q = 7777?

  A. 10 % q
  B. q % 10
  C. q / 10000
  D. q % 10000
  B. q % 10

  ---

  To find the rightmost digit of an integer q = 7777, we need the units digit (i.e., 7). According to foundational programming principles, the modulo operator (%) with 10 isolates the rightmost digit of a number.

  Option A: "10 % q."

  Compute: 10 % 7777 = 10 (since 10 ?7777 has a remainder of 10).

  Result: 10 # 7. Incorrect.

  Option B: "q % 10."

  Compute: 7777 % 10 = 7 (remainder of 7777 ?10, isolating the units digit).

  Result: 7 = rightmost digit. Correct.

  Option C: "q / 10000."

  Compute: 7777 / 10000 = 0.7777 (floating-point division).

  Result: 0.7777 # 7. Incorrect.

  Option D: "q % 10000."

  Compute: 7777 % 10000 = 7777 (since 7777 < 10000).

  Result: 7777 # 7. Incorrect.

  Certiport Scripting and Programming Foundations Study Guide (Section on Modulo Operator).

  C Programming Language Standard (ISO/IEC 9899:2011, Section on Multiplicative Operators).

  W3Schools: "Python Operators" (https://www.w3schools.com/python/python_operators.asp).

• Question 132:

  Which value would BEST be stored using a float data type?

  A. Number of pages in a book
  B. A person's age
  C. Average test score with decimals
  D. Number of students in a class
  C. Average test score with decimals

  ---

  A float data type is used to store numbers that may contain fractional or decimal values. An average test score often includes decimals, making float the most appropriate choice. Counts such as pages, age, or number of students are whole numbers and are better stored as integers.

• Question 133:

  Which two operators can be used for checking divisibility of a number?

  Choose 2 answers.

  A. ^
  B. *
  C. +
  D. $
  E. /
  F. %
  E. /
  F. %

  ---

  The operators used for checking divisibility are the division (/) and modulus (%) operators. The division operator (/) returns the quotient of the division, and if the quotient is a whole number without any remainder, then the number is divisible by the divisor. The modulus operator (%) returns the remainder of the division, and if the remainder is zero, it indicates that the number is divisible by the divisor. These operators are fundamental in programming for performing arithmetic operations and are widely supported across different programming languages. References: The use of these operators is based on standard arithmetic operations and their implementation in programming languages, which is a foundational concept in advanced scripting and programming1234.

• Question 134:

  A software developer creates a list of all objects and functions that will be used in a board game application and then begins to write the code for each object.

  A. Analysis and implementation
  B. Analysis and design
  C. Design and implementation
  D. Design and testing
  C. Design and implementation

  ---

  The process described involves two main phases: first, the developer is designing the application by creating a list of all objects and functions (the design phase), and then they are writing the code for each object (the implementation phase). This aligns with option C, Design and Implementation. Analysis would involve understanding the requirements or problems the software will address, which is not mentioned in the scenario. Testing is a separate phase that typically occurs after implementation to ensure

  the code works as intended.

  References: The information provided is based on standard practices in software development where design precedes implementation, and both are distinct from analysis and testing phases.

• Question 135:

  Which operator is used to determine whether two values are NOT equal?

  A. ==
  B. !=
  D. andand
  B. !=

  ---

  The != operator is an equality operator used to compare two values and determine whether they are not equal. If the values differ, the expression evaluates to true. The == operator checks for equality, <= checks for relational ordering, and andand is a logical operator used to combine Boolean expressions.

• Question 136:

  A program allows the user to play a game. At the end of each game, the program asks the user if they want to play again.

  Which programming structure on its own is appropriate to accomplish this task?

  A. Nested for loops
  B. One for loop
  C. One while loop
  D. If-else statement
  C. One while loop

  ---

  The most appropriate programming structure to repeatedly ask a user if they want to play a game again is a while loop. This is because a while loop can execute a block of code as long as a specified condition is true. In this case, the condition would be whether the user wants to play again or not. The while loop will continue to prompt the user after each game and will only exit if the user indicates they do not want to play again. This makes it an ideal choice for tasks that require repeated execution based on user input. For loops are generally used when the number of iterations is known beforehand, which is not the case here as we cannot predict how many times a user will want to play the game. Nested for loops and if-else statements are not suitable for repeating tasks based on dynamic user input. References: Loops in Programming - GeeksforGeeks Use the right loop to repeat tasks - Learn programming with Java - OpenClassrooms Using For and While Loops for User Input in Python - Stack Abuse

• Question 137:

  The steps in an algorithm to calculate the positive difference in two given values, x and y, are given in no particular order:

  

  Put Diff to output.

  Set Diff = x - y.

  If y > x, set Diff = y - x.

  Declare variable Diff.

  What is the first step of the algorithm?

  A. Set Diff = x - y
  B. Put Diff to output
  C. Deduce variable Diff
  D. If y > x, set Diff = y - x.
  C. Deduce variable Diff

  ---

  The first step in the algorithm to calculate the positive difference between two given values, x and y, is to declare the variable Diff. This is essential as it initializes the variable that will be used to store the calculated difference between x and y. The subsequent steps involve conditional statements and arithmetic operations that utilize this declared variable to compute and store the positive difference. References: N/A (as per image provided) The image shows steps of an algorithm listed in no particular order for calculating the positive difference between two values, making it relevant for understanding or teaching algorithmic logic and sequence.

• Question 138:

  Which data type should be used to hold the value of a person's body temperature in Fahrenheit

  A. Boolean
  B. Integer
  C. String
  D. Float
  D. Float

  ---

  References:

  Remember that using a float ensures flexibility and precision when dealing with temperature measurements.

• Question 139:

  Which value would require a Boolean data type?

  A. Total price of an item
  B. User's last name
  C. Whether access is granted
  D. Number of login attempts
  C. Whether access is granted

  ---

  A Boolean data type represents one of two values: true or false. Whether access is granted is a binary condition and is best represented using a Boolean variable.

• Question 140:

  The steps in an algorithm to build a picnic table are given.

  1) Measure and mark the lumber cuts that need to be made 2) Buy the needed materials 3) Determine the needed materials 4) Cut the lumber to the proper dimensions 5) Assemble the pieces and paint.

  Which two steps of the algorithm should be switched to make the algorithm successful?

  A. 2 and 3
  B. 1 and 3
  C. 2 and 4
  D. 1 and 2
  A. 2 and 3

  ---

  Measure and mark the lumber cuts: This step involves measuring and marking the specific cuts required for the picnic table. It ensures that the lumber pieces are appropriately sized for assembly.

  Determine the needed materials: Before purchasing materials, it's essential to determine what is required. This step involves creating a list of necessary items such as lumber, screws, paint, etc.

  Buy the needed materials: Once the materials list is ready, proceed to purchase them. This step ensures that you have all the necessary supplies before starting the construction.

  Cut the lumber to the proper dimensions: With the materials on hand, cut the lumber according to the measurements marked in step 1. This ensures that the pieces fit together correctly during assembly.

  Assemble the pieces and paint: Finally, assemble the cut lumber pieces to create the picnic table. After assembly, apply paint or finish as desired.

  References

  No specific references are provided for this question, but the steps align with general woodworking practices for constructing a picnic table. You can refer to woodworking guides or carpentry resources for further details.