WGU D684 INTRODUCTION TO COMPUTER
SCIENCE COURSE SECTION 1 AND 2
CURRENTLY TESTING WITH COMPLETE EXAM
QUESTIONS WITH DETAILED VERIFIED
ANSWERS /ALREADY GRADED A+
Which type of variable represents a whole number in computer programming?
String
Array
Integer
Float - ANSWER-Integer
2
What describes a named storage location that can hold values that can change?
Variable
Constant
Identifier
Operand - ANSWER-Variable
What is one standard rule for a variable name?
The name should have an appropriate meaning.
The name must start with a lowercase letter.
The name must start with the type designation.
The name must use hyphens between words. - ANSWER-The name should have
an appropriate meaning.
Which coding construct allows a choice between performing an action and
skipping it?
Assignment
Input/output
Selection
Iteration - ANSWER-Selection
What is the value of the expression a + (b / c) * d - e if a = 19, b = 6, c = 2, d = 20,
and e = 14?
,65
132
226
426 - ANSWER-65
What is a list?
A varying-length, ordered collection of homogeneous items that allows for easy
access, insertion, and removal
A group of related attributes stored as individual fields under a single name and
treated as a single concept
A fixed-length collection of homogeneous items that can each be accessed by its
position
A group in which individual elements are accessed from the same end that is called
the top - ANSWER-A varying-length, ordered collection of homogeneous items
that allows for easy access, insertion, and removal
How are items added to and removed from a stack?
All items can be added to or removed from any location.
All items can be accessed or changed but not easily inserted or removed.
The first item to be added becomes the first item removed.
The item removed is the one that has been in the shortest time. - ANSWER-The
item removed is the one that has been in the shortest time.
The collection of customers for a small business is stored in such a way that a
customer can be easily accessed, deleted, or added. What is the data structure
called for in this programming situation?
Queue
Record
Stack
List - ANSWER-List
What describes a reference parameter?
Stops the content of the argument from changing anywhere in the program
Passes a copy of the content in an argument to the function
Allows the user to type in the content of an argument at runtime
,Passes the address, rather than the content, of the argument to the function -
ANSWER-Passes the address, rather than the content, of the argument to the
function
The code shows a subprogram and a call to that subprogram.
my_function(num_a)
num_c = process(num_a)
store(num_c)num_b = my_function(num_d)
Which variable name represents an argument?
num_a
num_b
num_c
num_d - ANSWER-num_d
What does the object-oriented programming paradigm do to solve a programming
problem?
Uses the structures of logic to deduce the answer from the facts and rules
Enforces a specific type on each variable and strict rules about how types are used
Organizes a program into smaller components that bundle together fields and
methods
Solves a problem by breaking it down into procedures or functions - ANSWER-
Organizes a program into smaller components that bundle together fields and
methods
Which programming paradigm is a subset of the declarative paradigm?
Object-oriented
Procedural
Logic
Imperative - ANSWER-Logic
A software development team is building a new mobile application for performing
the secure transfer of cryptocurrency.
To ensure an efficient approach, they decide to follow the software development
lifecycle (SDLC) model.
Which step will the team expect to go through as part of this process?
, Maintain the program
Look for familiar things
Divide and conquer
Carry out the plan - ANSWER-Maintain the program
A programmer has been asked to lead a project that uses artificial intelligence to
search for patterns in Wi-Fi signals to improve efficiency and range. The
programmer will use the software development lifecycle (SDLC) as a model for
design and implementation.
Which step is the programmer in when choosing a programming language and
typing the code?
Put the program into production
Maintain the program
Code the program
Translate the code - ANSWER-Code the program
A software engineer is leading a project to create a module in self-driving cars that
compares the car's speed with the speed limit. To solve this problem, the engineer
is using the computer problem-solving process.
Which phase is the engineer in when defining the problem?
Analysis and specification
Algorithm development
Implementation
Maintenance - ANSWER-Analysis and specification
A computer scientist is working to optimize an algorithm that finds the shortest
driving distance between cities and wants to utilize the computer problem-solving
process for this project.
Which phase is the computer scientist in when translating a planned sequence of
steps into a programming language?
Algorithm development
Implementation
SCIENCE COURSE SECTION 1 AND 2
CURRENTLY TESTING WITH COMPLETE EXAM
QUESTIONS WITH DETAILED VERIFIED
ANSWERS /ALREADY GRADED A+
Which type of variable represents a whole number in computer programming?
String
Array
Integer
Float - ANSWER-Integer
2
What describes a named storage location that can hold values that can change?
Variable
Constant
Identifier
Operand - ANSWER-Variable
What is one standard rule for a variable name?
The name should have an appropriate meaning.
The name must start with a lowercase letter.
The name must start with the type designation.
The name must use hyphens between words. - ANSWER-The name should have
an appropriate meaning.
Which coding construct allows a choice between performing an action and
skipping it?
Assignment
Input/output
Selection
Iteration - ANSWER-Selection
What is the value of the expression a + (b / c) * d - e if a = 19, b = 6, c = 2, d = 20,
and e = 14?
,65
132
226
426 - ANSWER-65
What is a list?
A varying-length, ordered collection of homogeneous items that allows for easy
access, insertion, and removal
A group of related attributes stored as individual fields under a single name and
treated as a single concept
A fixed-length collection of homogeneous items that can each be accessed by its
position
A group in which individual elements are accessed from the same end that is called
the top - ANSWER-A varying-length, ordered collection of homogeneous items
that allows for easy access, insertion, and removal
How are items added to and removed from a stack?
All items can be added to or removed from any location.
All items can be accessed or changed but not easily inserted or removed.
The first item to be added becomes the first item removed.
The item removed is the one that has been in the shortest time. - ANSWER-The
item removed is the one that has been in the shortest time.
The collection of customers for a small business is stored in such a way that a
customer can be easily accessed, deleted, or added. What is the data structure
called for in this programming situation?
Queue
Record
Stack
List - ANSWER-List
What describes a reference parameter?
Stops the content of the argument from changing anywhere in the program
Passes a copy of the content in an argument to the function
Allows the user to type in the content of an argument at runtime
,Passes the address, rather than the content, of the argument to the function -
ANSWER-Passes the address, rather than the content, of the argument to the
function
The code shows a subprogram and a call to that subprogram.
my_function(num_a)
num_c = process(num_a)
store(num_c)num_b = my_function(num_d)
Which variable name represents an argument?
num_a
num_b
num_c
num_d - ANSWER-num_d
What does the object-oriented programming paradigm do to solve a programming
problem?
Uses the structures of logic to deduce the answer from the facts and rules
Enforces a specific type on each variable and strict rules about how types are used
Organizes a program into smaller components that bundle together fields and
methods
Solves a problem by breaking it down into procedures or functions - ANSWER-
Organizes a program into smaller components that bundle together fields and
methods
Which programming paradigm is a subset of the declarative paradigm?
Object-oriented
Procedural
Logic
Imperative - ANSWER-Logic
A software development team is building a new mobile application for performing
the secure transfer of cryptocurrency.
To ensure an efficient approach, they decide to follow the software development
lifecycle (SDLC) model.
Which step will the team expect to go through as part of this process?
, Maintain the program
Look for familiar things
Divide and conquer
Carry out the plan - ANSWER-Maintain the program
A programmer has been asked to lead a project that uses artificial intelligence to
search for patterns in Wi-Fi signals to improve efficiency and range. The
programmer will use the software development lifecycle (SDLC) as a model for
design and implementation.
Which step is the programmer in when choosing a programming language and
typing the code?
Put the program into production
Maintain the program
Code the program
Translate the code - ANSWER-Code the program
A software engineer is leading a project to create a module in self-driving cars that
compares the car's speed with the speed limit. To solve this problem, the engineer
is using the computer problem-solving process.
Which phase is the engineer in when defining the problem?
Analysis and specification
Algorithm development
Implementation
Maintenance - ANSWER-Analysis and specification
A computer scientist is working to optimize an algorithm that finds the shortest
driving distance between cities and wants to utilize the computer problem-solving
process for this project.
Which phase is the computer scientist in when translating a planned sequence of
steps into a programming language?
Algorithm development
Implementation
