WGUs D684 Introduction To Computer Science Course 2

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WGU’s D684 Introduction To Computer Science Course (2 versions) Includes Verified Questions And Learning Content Covering Foundational Computing Concepts Such As Programming Logic, Software Development Lifecycles, Algorithms, Data Structures, Binary And Hexadecimal Systems, And Basic Cybersecurity Principles. This Course Serves As An Entry Point Into WGU’s Computer Science Or IT Degree Programs, Preparing Students For More Advanced Technical Coursework.

Version 1 Which principle of OOP is demonstrated by restricting access to certain parts of an object?

• Abstraction
• Encapsulation
• Inheritance
• Polymorphism - ANSWER-Encapsulation

What does the term "abstraction" refer to in OOP?

• The practice of hiding the complex implementation details and

showing only the necessary features 1 / 4

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• The ability to define multiple methods with the same name but

different parameter lists

• The process of creating complex data types from basic ones
• The ability of different objects to respond to the same method

in different ways - ANSWER-The practice of hiding the complex implementation details and showing only the necessary features.

Which value is stored as an integer in computer programming?

• "0"
• true

- -306.5

- 21 - ANSWER-21

Which coding construct repeats a task while a condition is true?

• Iteration
• Input/output
• Selection
• Assignment - ANSWER-Iteration

How are items accessed in a stack? 2 / 4

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• The item removed is the one that has been in the longest time.
• All items can be added to or removed from any location.
• The last item to be added becomes the first item removed.
• All items can be accessed or changed but not easily inserted or

removed. - ANSWER-The last item to be added becomes the first item removed.

What is the relationship between a parameter and an argument?

• A parameter is passed to a function by reference, whereas an

argument is passed by value.

• A parameter is a temporary variable in a function that receives

the actual value of an argument.

• An argument is an identifier in a function that receives the

value called the parameter.

• An argument is a value set in the code by a calculation,

whereas a parameter is set by user input. - ANSWER-A parameter is a temporary variable in a function that receives the actual value of an argument.

Which programming language is considered to be a declarative language?

• Smalltalk 3 / 4

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- BASIC

• Lisp

- Java - ANSWER-Lisp: The declarative programming paradigm

is a model in which the results are described, but the steps to accomplish the results are not stated.

What does computational thinking involve?

• Designing user interfaces
• Managing network infrastructure
• Solving problems using logical steps
• Memorizing programming languages - ANSWER-Solving

problems using logical steps.

What is the software development lifecycle (SDLC) primarily concerned with?

• Testing software
• Managing the software development process
• Writing code
• Designing databases - ANSWER-Managing the software

development process.

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