MIDTERM - BOOLEAN PRACTICE

• Wrong Wrong Correct Wrong

• True True False True

• Correct Correct Wrong Correct

• Correct Wrong Correct

In the procedure Mystery below, the parameter number is a positive integer. Which of the following best describes the result of running the procedure Mystery?

• The procedure returns true when the initial value of number is 2, and it otherwise returns false.

• The procedure returns true when the initial value of number is greater than 2, and it otherwise returns false.

• The procedure returns true when the initial value of number is even, and it otherwise returns false.

• The procedure returns true when the initial value of number is odd, and it otherwise returns false.

Code for the procedure Mystery is shown below. Assume that the parameter p has been assigned a positive integer value (e.g. 1,2,3...) Which of the following shows a POSSIBLE result of calling the procedure?

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The following question uses a robot in a grid of squares. The robot is represented by a triangle, which is initially facing toward the top of the grid. Which of the following code segments will move the robot to the gray square along the path indicated by the arrows?

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Consider the following program, which uses the variables START,  END, and CURRENT

What is displayed as a result of executing the program?

• 1, 3

• 3, 3

• 3, 4

• 4, 4

A computer science student completes a program and asks a classmate for feedback. The classmate suggests rewriting some of the code to include more procedural abstraction.

Which of the following is NOT a benefit of procedural abstraction?

• Making the code more readable

• 
  Providing more opportunities for code reuse

• Reducing the amount of duplicated code

• Making the code run faster

Assume that the two variables age and day have been initialized with the values shown.

var age = 16;

var day = "Monday";

Determine if the following statement evaluates to true or false.

(age > 10) && (age < 20)

• TRUE

• FALSE

Assume that the two variables age and day have been initialized as shown below.

var age = 16;

var day = "Monday";

Determine if the following statement evaluates to true or false.

((age == 16) && (day == "Monday")) || (day == "Tuesday")

• TRUE

• FALSE

Which symbol means "not equal to"?

• ==

• !=

• >=

• <=

Which of the following best describes what the nested code part of a conditional is?

• 
  This part is the code that runs in a conditional if the condition is true

• 
  This is the part of the code that checks whether a condition is true or false

• This is a code that saves multiple pieces of information in one place

• 
  This is a code that shows how many times a loop should run