wgu c173 scripting and programming – foundations final objective assessment 20222023 detailed questions and answers graded a
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WGU C173 SCRIPTING AND PROGRAMMING – FOUNDATIONS FINAL
OBJECTIVE ASSESSMENT 2022/2023 DETAILED QUESTIONS AND
ANSWERS
What is an editor? (correct answers)A program that allows you to write code
What is a compiler? (correct answers)A program that produces other programs. The compiler does all
the work at once and then runs the new program. We're translating the code we wrote to computer
code all at once. This is often when we produce an .exe (executable) file.
^^What is an interpreter? (correct answers)runs a program's statements. A program that runs code one
line at a time. Instead of converting all of the code at once it runs each line as it's needed. It interprets
that specific line from your code to computer code.
What is an operator and what does it do? (correct answers)An operator takes two operands (values) and
does something with them. It is an object capable of manipulating a value. If it is a comparison or logical
operator it would compare to see if they are similar or dissimilar. If it is a mathematical operator it
would perform mathematical calculations.
What is an expression? (correct answers)something that has a value.
What is the difference in a terminal and non-terminal expression? (correct answers)A terminal is a final
value, while a non-terminal can be reduced further.
What is proper Python grammar for making an expression? (correct answers)Expression → Expression
Operator Expression
The Expression non-terminal that appears on the left side can be replaced by an Expression, followed by
an Operator, followed by another Expression. For example, 1 + 1 is an Expression Operator Expression.
^^ What is a variable? (correct answers)Simply put its a container for storing a value. Used by programs
to refer to data. It is a named item, used to hold a value. A name that refers to a value. program can
,store that data in variables. Each variable has a name, a value, and a type. The value might change over
time, and that's why its "variable."
What are the three main types of data covered? How do you declare each one? (correct answers)string
is a sequence of characters surrounded by quotes, either single or double
example: myVar = "string data"
^^ Integers (correct answers)Is a whole number value. No decimals, whole numbers only example:
myVar = 33
What is grammar used for in programming? (correct answers)In a programming language like Python,
the code must match the language grammar exactly. When programming language grammar is not
followed the interpreter will return a Syntax Error message. This means that the structure of the code is
inconsistent with the rules of the programming language.
How do you change the value of a variable with Python? (correct answers)Using the = character to
assign a new value
x=6
x=9
print x # would print out 9
How to do you join multiple variables together with string data in Python? What is this called? (correct
answers)Using the + sign to concatenate the values
What does it mean to index a string? How do you do that with Python code? (correct answers)This is
what we call selecting a sub-sequence of a string. You do this in Python by specifying the character you
want to access by its index position. Index position begins at 0. For example, this code would print out
the letter J:
, name = 'John'
print name[0]
What does it mean to slice a string? How do you do that with Python code? (correct answers)Slicing is
simply obtaining a subset of data from a string. You may have also heard this called string extraction.
You do this in Python by specifying the index position where you want to begin and where you want to
end. Everything from the starting point up until the end point will be extracted. For example, this code
would print out "Jo":
name = 'John'
print name[0:2]
+ (correct answers)concatenate or add
= (correct answers)assignment
* (correct answers)multiply
- (correct answers)subtract
/ (correct answers)divide
^^ % (correct answers)Division and returns the remainder, Modulos
What does the * operator do when applied to string data? (correct answers)It writes out the string data
multiple times. For example, print '!' * 12 would output !!!!!!!!!!!! (12 exclamation points).
What does a procedure do? (correct answers)takes in inputs, does some processing, and produces
outputs
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