WGU University WGU-SPF Online Practice Questions and Exam Preparation

WGU University WGU-SPF Online Questions & Answers

• Question 1:

  Which output results from the following pseudocode?

  

  x = 5 do x = x + 4 while x < 18 Put x to output

  A. 9
  B. 18
  C. 21
  D. 25
  C. 21

  ---

  The pseudocode provided is a loop that runs 3 times. Each time it runs, it adds the loop counter i (which takes the values 1, 2, and 3 in each iteration) to a sum variable total. The sum starts at 15, and the loop adds 1, then 2, then 3 to it. So the calculation is as follows:

  total=15+1+2+3=21

  This means that after the loop finishes executing, the total will be 21. References: The explanation is based on the standard understanding of loops and summation in programming logic as per Scripting and Programming Foundations principles. Pseudocode is a high-level description of an algorithm that uses the structural conventions of programming languages but is intended for human reading rather than machine reading. This pseudocode represents a simple loop structure commonly used in

  programming to accumulate a sum.

  1: Pseudocode Examples -Programming Code Examples

  2: Ada Computer Science - Pseudocode

• Question 2:

  The steps in an algorithm to find the maximum of integers a and b are given.

  

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

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

  ---

  The variable max should be declared before it is used. So, the corrected algorithm would be:

  Declare variable max.

  Set max = a.

  If b > max, set max = b.

  Put max to output.

  This way, the variable max is declared before being assigned the value of a, and the rest of the algorithm can proceed as given. Thank you for the question! Let me know if you have any other queries.

• Question 3:

  Which characteristic distinguishes an object-oriented language from other languages?

  A. It includes custom variable types with methods, information hiding, data abstraction, encapsulation, polymorphism, and inheritance.
  B. It is extremely portable and can be run on any machine that has a program than can read the code.
  C. It has variables that never change type during execution
  D. lt specifies a series of well-structured steps to compose a program.
  A. It includes custom variable types with methods, information hiding, data abstraction, encapsulation, polymorphism, and inheritance.

  ---

  The defining characteristic of an object-oriented language is its support for objects and classes, which encapsulate data and behavior. This includes the ability to define custom variable types (classes) with their own methods, and the use of key principles such as information hiding, data abstraction, encapsulation, polymorphism, and inheritance. These features distinguish object-oriented languages from procedural languages, which do not typically support these concepts in the same way. References: The characteristics of object-oriented programming (OOP) are well- documented and recognized in the field of software development. The information provided aligns with standard definitions and explanations of OOP, as found in educational resources and programming literature.

• Question 4:

  Which kind of language is HTML?

  A. Markup
  B. Object-oriented
  C. Statically typed
  D. Dynamically typed
  A. Markup

  ---

  HTML stands for HyperText Markup Language. It is a markup language, which means it is used for creating and structuring sections, paragraphs, and links on web pages. It is not a programming language like object-oriented or typed languages; instead, it provides the structure and layout of information on the Internet.

  References:

  The definition and classification of HTML as a markup language are standard in web development and can be found in numerous educational resources, including "HTML and CSS: Design and Build Websites" by Jon Duckett and the World Wide Web Consortium's (W3C) HTML5 specification documentation.

• Question 5:

  Which phase of the Agile process focuses on determining WHAT features should be added to a program?

  A. Testing
  B. Implementation
  C. Analysis
  D. Deployment
  C. Analysis

  ---

  The analysis phase in Agile focuses on gathering requirements, refining user stories, and deciding which features or capabilities should be developed next. This phase emphasizes understanding customer needs rather than writing code.

• Question 6:

  What will this code print?

  x = 3

  y = 4

  print(x ** y)

  A. 12
  B. 81
  C. 64
  D. Error
  B. 81

  ---

  ** is the exponentiation operator in Python. 3 ** 4 equals 81.

• Question 7:

  What is required for all function calls?

  A. Parameters
  B. Input arguments
  C. Output values
  D. Function name
  D. Function name

  ---

  When calling a function in Python, you simply give the name of the function followed by parentheses. Even if the function doesn't take any arguments, you still need to include the parentheses. For example, print("Hello!") is a function call. The function name should describe what it's supposed to do. Function definitions begin with the def keyword, followed by the function name and parameters (if any). The statements within the function definition are indented and carry out the task the function is supposed to perform. References: Function Calls and Definitions ?Real Python Function Calls | Microsoft Learn Stack Overflow: Find all function calls by a function

• Question 8:

  Which two statements describe advantages to using programming libraries?

  A. Using a library minimizes copyright issues in coding
  B. A program that uses libraries is more portable than one that does not.
  C. Using libraries turns procedural code into object-oriented code.
  D. Libraries always make code run faster.
  E. The programmer can improve productivity by using libraries.
  F. Using a library prevents a programmer from having to code common tasks by hand.
  E. The programmer can improve productivity by using libraries.
  F. Using a library prevents a programmer from having to code common tasks by hand.

  ---

  E. The programmer can improve productivity by using libraries.

  F. Using a library prevents a programmer from having to code common tasks by hand.

• Question 9:

  What is the output of the given flowchart if the input is 54?

  

  A. 55
  B. 56
  C. 58
  D. 60
  A. 55

  ---

  Start with the input value (in this case, 54).

  Follow the flowchart's paths and apply the operations as indicated by the symbols and connectors.

  The rectangles represent processes or actions to be taken. The diamonds represent decision points where you will need to answer yes or no and follow the corresponding path.

  The parallelograms represent inputs/outputs within the flowchart. Use the input value and apply the operations as you move through the flowchart from start to finish.

  References:

  Flowchart analysis is based on the understanding of flowchart symbols and their meanings, which can be found in resources such as ASQ's guide to flowcharts and Asana's explanation of flowchart symbols. To determine the correct answer, you would need to apply the input value of 54 to the flowchart and follow the steps until you reach the end, noting the output value. If you encounter any decision points, evaluate the condition with the current value and choose the path accordingly. By the end of the

  flowchart, you should have the final output value which corresponds to one of the options provided.

• Question 10:

  What are two examples of equality operators?

  Choose 2 answers

  A. !=
  B. ==
  D. /
  F. not
  A. !=
  B. ==

  ---

  Equality operators are used to compare two values or expressions to determine if they are equal or not. The == operator checks for equality, returning true if the two operands are equal. Conversely, the != operator checks for inequality, returning true if the operands are not equal. These operators are fundamental in programming for control flow, allowing decisions to be made based on the comparison of values. For example, in a conditional statement, one might use:

  if (x == y) {

  // Code to execute if x is equal to y

  }

  And for inequality:

  if (x != y) {

  // Code to execute if x is not equal to y

  }

  References: The explanation provided is based on standard programming practices and the definitions of equality operators as commonly used in many programming languages.