CPSI 2413 - Unit 2

Question 1

Subclasses are more specific than the superclass they extend.

Answer

true

Question 2

In a UML diagram, an inheritance relationship is indicated with an arrow that points from the original class to the descendant class.

Answer

true

Question 3

When you use the method name with a child object, the parent’s version of the method is used.

Answer

true

Question 4

Composition can be modeled as a "IS A" relationship.

Answer

true

Question 5

Inheritance can be modeled as a "IS A" relationship.

Answer

true

Question 6

Polymorphism relies on inheritance to operate.

Answer

true

Question 7

When you create a superclass and one or more subclasses, each object of each subclass is a subclass object.

Answer

true

Question 8

Java does not allow a class to inherit directly from two or more parents.

Answer

true

Question 9

A nonstatic method cannot override a static member of a parent class.

Answer

true

Question 10

____ polymorphism is the ability of one method to work appropriately for subclasses of the same parent class.

Accepted Answer

Subtype

Answer

Name

Answer

Supertype

Answer

Override

Question 11

____ is a mechanism that enables one class to acquire all the behaviors and attributes of another class.

Accepted Answer

Inheritance

Answer

Polymorphism

Answer

Encapsulation

Answer

Override

Question 12

If a programming language does not support ____, the language is not considered object-oriented.

Accepted Answer

polymorphism

Answer

syntax

Answer

applets

Answer

loops

Question 13

It is common to create an interface when you want a class to implement behavior from more than one parent.

Answer

true

Question 14

Abstract classes and interfaces are similar in that you cannot instantiate concrete objects from either one.

Answer

true

Question 15

When you create a class that uses an interface, you include the keyword extends.

Answer

true

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