Programarejava.wikispaces.com File View MID.txt

Section 2

1. In computing, a textual storyboard is called a source code: a list of actions to perform a task or solve a problem. True or false? (1) Points

True

False (*)

[Incorrect] Incorrect. Refer to Section 2 Lesson 1.

2. In Alice, which of the following programming statements moves the cat backward, half the distance to the bird? (1) Points

this.Cat move backward {this.Bird getDistanceTo this.Cat / 2}

this.Cat move forward {this.Bird getDistanceTo this.Cat / 2}

this.Bird move forward {this.Bird getDistanceTo this.Cat / 2}

this.Cat move backward {this.Cat getDistanceTo this.Bird / 2} (*)

[Correct] Correct

3.

Expressions with relational operators produce true and false values. True or false?

Mark for Review (1) Points

True (*) False

[Correct] Correct

4. A typical application uses various values and these values continuously change while the program is running. True or false? (1) Points

True (*)

False

[Correct] Correct

5. In Alice, which of the following are benefits of separating out motions into their own procedures? Mark for Review (1) Points

(Choose all correct answers)

It makes the animation easier to run.

It makes the scene easier to view.

It simplifies code and makes it easier to read. (*)

It allows many objects of a class to use the same procedure. (*)

It can allow subclasses of a superclass to use a procedure. (*)

[Correct] Correct Section 2

6. In Alice, procedural abstraction is the concept of making code easier to understand and reuse. True or false? (1) Points

True (*)

False

[Correct] Correct

7. In Alice, when a new procedure is declared, all subclasses of the superclass will inherit the procedure. True or false? (1) Points

True (*)

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6/1/2014http://programarejava.wikispaces.com/file/view/MID.txt

False

[Correct] Correct

8. From your Alice lessons, variables are fixed and cannot be changed. True or false? Mark for Review (1) Points

True

False (*)

[Correct] Correct

9. From your Alice lessons, what can be used as a guideline to ensure your animation fulfills animation principles? (1) Points

The Internet

Animation checklist (*)

A close friend

None of the above

[Correct] Correct

10. From your Alice lessons, number, boolean, String and object are all examples of variable types. True or false? (1) Points

True (*)

False


Section 2

11. Which of the following is not an example of the logic of an IF control structure? Mark for Review (1) Points

Play the video three times. (*)

If the play button is pressed, then play the video one time.

If the doorbell rings, then the door opens.

If the bird rings the bell, a treat is dispensed.

[Correct] Correct

12. Main is an example of what in the following code?public static void main (String[] args) {System.out.println{"Hello World!");} Mark for Review (1) Points

An instance

A method (*)

A class

A variable


13. A complete Alice instruction includes which of the following components? Mark for Review (1) Points


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Image

Class

Procedure (*)

Direction (*)

Amount (*)


14. In Alice, which of the following instructions roll the Blue Tang fish left 1 meter? Mark for Review (1) Points

this.blueTang roll Left 1.0 (*)

this.blueTang Left 1.0

this.blueTang Left 1

this.blueTang roll Left 1

[Correct] Correct

15. From your Alice lessons, random numbers are set in the distance and duration arguments in a procedure. True or false? (1) Points

True (*)

False

[Correct] Correct

Section 2

16. From your Alice lessons, what is a one-shot procedural method? Mark for Review (1) Points

A procedure that is invoked when the Run button is clicked.

A procedure that is used to make a scene adjustment. (*)

A procedure that is dragged into the code editor.

A procedure that is used to launch the program.

[Correct] Correct

17. From your Alice lessons, an instance's properties cannot be modified. True or false? Mark for Review (1) Points

True

False (*)


18. From your Alice lessons, saving multiple versions of an Alice animation scene is unimportant, because it does not save time. It actually wastes time. True or false? (1) Points

True

False (*)

[Correct] Correct

19. What Alice tool can be used to diagram the If conditional execution statement? Mark for Review (1) Points

Cause and effect diagram

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Process flow diagram (*)

Conditional flow diagram


20. From your Alice lessons, the If control structure can process one true and one false response. True or false? (1) Points

True (*)

False

[Correct] Correct

Section 2

21. The Alice If control structure requires the false statement to be populated. True or false? Mark for Review (1) Points

True

False (*)

[Correct] Correct

22. In Alice, which of the following arguments are available to further refine an object's movements? Mark for Review (1) Points


Object

Distance (*)

Duration (*)

Delay


23. From your Alice lessons, where should comments be placed? Mark for Review (1) Points

Above each set of programming statements. (*)

At the end of the program.

In the scene editor.

In their own procedure.

[Correct] Correct

24. In Alice, once procedures are added to a control statement, they cannot be changed. True or false? Mark for Review (1) Points

True

False (*)

[Correct] Correct

25. In Alice, functions are dragged into the control statement, not the procedure. True or false? Mark for Review (1) Points

True

False (*)

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[Correct] Correct

Section 3

26. Which of the following demonstrates a Greenfoot subclass/superclass relationship? Mark for Review (1) Points

A dog is a subclass of the cat superclass.

A rose is a subclass of the flower superclass. (*)

A computer is a subclass of a video game superclass.

A single person is a superclass of the human subclass.

[Correct] Correct

27. In Greenfoot, which of the following are execution controls? Mark for Review (1) Points


Run (*)

Act (*)

Speed (*)

Move

Turn

[Correct] Correct

28. In a Greenfoot if-else statement, if the condition is true, the if-statement is executed, and then the else-statement is executed. True or false? (1) Points

True

False (*)

[Correct] Correct

29. From your Greenfoot lessons, which type of constructor can be used to automate creation of Actor instances? (1) Points

Animal

World (*)

Actor

Vector


30. From your Greenfoot lessons, classes can only use the methods they have inherited. They cannot use methods from other classes. True or false? (1) Points

True

False (*)

[Correct] Correct

Test: Java Fundamentals Mid Term Exam

Review your answers, feedback, and question scores below. An asterisk (*) indicates a correct answer.Section 3

31. From your Greenfoot lessons, how do you test that your code does not contain bugs? Mark for Review (1) Points

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Write the code.

Inspect the instances.

Review the documentation.

Compile the code. (*)

[Correct] Correct

32. From your Greenfoot lessons, which line of code is missing something?

Mark for Review (1) Points

1

3 (*)

4

5

6

[Correct] Correct

33. In Greenfoot, you may perform the programming tasks of create and test many times. True or false? Mark for Review (1) Points

True (*)

False

[Correct] Correct

34. Greenfoot does not have tools to record sound. True or false? Mark for Review (1) Points

True

False (*)

[Correct] Correct

35. In Greenfoot, which method checks if a key on the keyboard has been pressed? Mark for Review (1) Points

keyPress method

keyUp method

keyDown method (*)

keyClick method


Section 3

36. In Greenfoot, actor constructors can be used to create images or values and assign them to the variables. True or false? (1) Points

True (*)

False

[Correct] Correct

37. When you re-initialize a scenario, Greenfoot automatically displays an instance of the World subclass in the scenario. True or false?

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(1) Points

True (*)

False


38. In Greenfoot, an if-statement is used to alternate between displaying two images in an instance. True or false? (1) Points

True

False (*)


39. In Greenfoot, a local variable is declared at the beginning of a class. True or false? Mark for Review (1) Points

True

False (*)


40. In Greenfoot, what is a common letter used for the loop variable? Mark for Review (1) Points

A

I (*)

X

Y

[Correct] Correct

Section 3

41. In Greenfoot, which of the following statements could prevent an infinite loop from occurring? Mark for Review (1) Points

I = 100 + i

i=1

i = i

i = i + 1 (*)

[Correct] Correct

42. Use your Greenfoot knowledge to answer the question. One reason to write a defined method in a class is to change the behavior of the class. True or false? (1) Points

True (*)

False

[Correct] Correct

43. To execute a method in your Greenfoot game, where is it called from? Mark for Review (1) Points

The world

The act method (*)

The actor class

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The gallery


44. In Greenfoot, defined methods must be used immediately. True or false? Mark for Review (1) Points

True

False (*)

[Correct] Correct

45. In the Greenfoot IDE, which of the following is not a property of an instance? Mark for Review (1) Points

Position

Inherited methods

Scenario name (*)

Defined methods

[Incorrect] Incorrect. Refer to Section 3 Lesson 2. Section 3

46. What does the following Greenfoot programming statement do?

turn(18); Mark for Review (1) Points

Turn the object 36 degrees.

Turn the object 18 degrees. (*)

Turn the object 18 steps forward.

Move the object 18 steps forward.

[Correct] Correct

47. What type of Greenfoot method would be used to turn an object? Mark for Review (1) Points

orientTo( );

turnAround( );

move ( );

turn( ); (*)

[Correct] Correct

48. From your Greenfoot lessons, abstraction techniques can only be used once in a class's source code. True or false? (1) Points

True

False (*)


49. Use your Greenfoot knowldege: Abstraction occurs in many different ways in programming. True or false? Mark for Review (1) Points

True (*)

False

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[Correct] Correct

50. In Greenfoot, what happens if the condition is false in an if-statement? Mark for Review (1) Points

The programming statements are executed.

The if-statement is executed.

The act method is deleted.

The programming statements are not executed. (*)

[Correct] Correct

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