1
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
,2
- 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?
,3
- 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
, 4
- 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.
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
,2
- 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?
,3
- 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
, 4
- 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.
