1. PreAP Computer Science Quiz 09.01- 06 Key
Take out a piece of paper and PEN.
The quiz starts ONE minute after the tardy bell rings.
You will have 30 or 45 seconds per question.

2. Title the quiz as shown below The quiz starts in ONE minute.
Name
Period
Date
Quiz
EC.

3. Question 01 Inheritance describes what type of relationship? “is-a”
“has-a”

4. Question 02 Composition describes what type of relationship? “is-a”
“has-a”

5. Question 03
Which of the following shows an example of an inheritance relationship?
dog cat
house door
hanger shelf
student person 5

6. Question 04
Which of the following shows an example of a composition relationship?
dog cat
house door
hanger shelf
student person 6

7. Question 05 Inheritance involves the use of at least two
classes. The existing (and more general)
class is called the
superclass.
default class.
overloaded class.
subclass.

8. Question 06 Inheritance involves the use of at least two
classes. The new and improved class which
uses inheritance is called the
superclass.
default class.
overloaded class.
subclass.

9. Question 07 Which single Java keyword indicates that
inheritance is used?
isa
hasa
extends
inherits

10. Question 08
True or False
When an object of a subclass is instantiated,
the constructor of the superclass is called first.
True
(b) False

11. Question 09 True or False Methods of a subclass have access to the
private data of a superclass.
True
False

12. Question 10 True or False Methods of a subclass have access to the
public data of a superclass.
True
False

13. Question 11 True or False Methods of a subclass have access to the
protected data of a superclass.
True
False

14. Question 12 The Geometry analogy which states that
a square is a rectangle is an example of
encapsulation.
concatenation.
inheritance.
polymorphism.
composition.

15. Question 13
How should super class data be declared if you want to grant direct access to subclass methods, but you do not want to grant direct access to methods of all classes?
(a) public
(b) private
protected 15

16. Question 14
True or False
Inheritance is limited to two levels with two
classes.
True
False

17. Question 15 Which of these is possible in C++, but not in Java?
multi-level inheritance
multiple inheritance
composition
inheritance and composition
several subclasses inheriting from one superclass

18. Question 16 Animal Mammal Dog Terrier Look at this graphic.
What is this an example of?
multi-level inheritance
multiple inheritance
composition
inheritance and composition
several subclasses inheriting from one superclass
Question 16
Animal
Mammal
Dog
Terrier

19. Question 17 Look at this graphic. What is this an example of?
multi-level inheritance
multiple inheritance
composition
inheritance and composition
several subclasses inheriting from one superclass
Question 17

20. Question 18 Reptile Extinct Dinosaur Look at this graphic.
What is this an example of?
multi-level inheritance
multiple inheritance
composition
inheritance and composition
several subclasses inheriting from one superclass
Question 18
Reptile
Extinct
Dinosaur

21. Question 19 Look at this graphic. What is this an example of?
multi-level inheritance
multiple inheritance
composition
inheritance and composition
several subclasses inheriting from one superclass
Question 19

22. Question 20 Look at this graphic. What is this an example of?
multi-level inheritance
multiple inheritance
composition
inheritance and composition
several subclasses inheriting from one superclass
Question 20

23. Extra Credit
In the Fish class case study, Fish4 inherits from Fish3. Fish3 has a moveFish method. Fish4 also has a moveFish method. What does this mean?
(a) The moveFish method of Fish4 is a constructor.
The moveFish method of Fish3 is a constructor.
(c) Fish4 re-defined the moveFish method.
(d) Fish4 is a superclass of Fish3
(e) Fish4 cannot compile.