WGU D278 OBJECTIVE ASSESSMENT 70
STUDY GUIDE WITH SOLVED QUESTIONS AND
ANSWERS
◉ A variable should hold a person's height in meters.Which data
type should the variable be?
Answer: Float
◉ A variable should hold the names of all past U.S. presidents.
Which data type should the variable be?
Answer: String array
◉ A program uses the number of seconds in a minute in various
calculations.
How should the item that holds the number of seconds in a minute
be declared?
Answer: Constant integer secondsPerMinute
◉ A program determines if a user's age is high enough to run for U.S.
president. The minimum age requirement is 35.
,How should the item that holds the minimum age be declared?
Answer: Constant integer minAge
◉ Given integer x = 3 and integer y = 5.
What is the value of the expression (x / 2.0) + y?
Answer: 6
◉ Given float x = 10.2 and float y = 1.0.
What is the value of the expression x / y?
Answer: 10
◉ What kind of operator is the == in the expression i == 20?
Answer: Equality
◉ Given float x = 3.0.
Which expression evaluates to 2.0?
Answer: x / 2 + 0.5 /2 + .25
, ◉ Which expression represents all the values of x, when x is the age
ranging from 18 to 24 years old?
Answer: (x >= 18) and (x <= 24)
◉ Which data type should be used to keep track of how many planes
are in a hangar?
Answer: Integer
◉ A function should convert hours and minutes to seconds, such as
converting 1 hour and 10 minutes to 4,200 seconds.
What should be the input to the function?
Answer: Hours and minutes
◉ A function returns a number x cubed. For example, if x is 3, the
function returns 3 * 3 * 3, or 27.
What should be the input to the function?
Answer: x
◉ A function calculates the weight difference (Diff) given two
sample weights (S1 and S2).
STUDY GUIDE WITH SOLVED QUESTIONS AND
ANSWERS
◉ A variable should hold a person's height in meters.Which data
type should the variable be?
Answer: Float
◉ A variable should hold the names of all past U.S. presidents.
Which data type should the variable be?
Answer: String array
◉ A program uses the number of seconds in a minute in various
calculations.
How should the item that holds the number of seconds in a minute
be declared?
Answer: Constant integer secondsPerMinute
◉ A program determines if a user's age is high enough to run for U.S.
president. The minimum age requirement is 35.
,How should the item that holds the minimum age be declared?
Answer: Constant integer minAge
◉ Given integer x = 3 and integer y = 5.
What is the value of the expression (x / 2.0) + y?
Answer: 6
◉ Given float x = 10.2 and float y = 1.0.
What is the value of the expression x / y?
Answer: 10
◉ What kind of operator is the == in the expression i == 20?
Answer: Equality
◉ Given float x = 3.0.
Which expression evaluates to 2.0?
Answer: x / 2 + 0.5 /2 + .25
, ◉ Which expression represents all the values of x, when x is the age
ranging from 18 to 24 years old?
Answer: (x >= 18) and (x <= 24)
◉ Which data type should be used to keep track of how many planes
are in a hangar?
Answer: Integer
◉ A function should convert hours and minutes to seconds, such as
converting 1 hour and 10 minutes to 4,200 seconds.
What should be the input to the function?
Answer: Hours and minutes
◉ A function returns a number x cubed. For example, if x is 3, the
function returns 3 * 3 * 3, or 27.
What should be the input to the function?
Answer: x
◉ A function calculates the weight difference (Diff) given two
sample weights (S1 and S2).
