1. Question : (TCO 7) If a class contains an abstract method, the class must be declared _____.

abstract

public

private

None of the above

2. Question : (TCO 7) What is an abstract class?

Any class which can be instantiated

A class without any subclasses

A conceptually vague or generalized class

Any superclass with more than one subclass

3. Question : (TCO 7) Which of the following statements is false?

An abstract method is a method signature without a method body and can be found in an abstract class.
If a subclass extends an abstract base class, the subclass must implement the abstract method(s) from the base class, or else call itself abstract also.
Any method in an abstract class is considered an abstract method.
Abstract methods are inherited.

4. Question : (TCO 7) Which of the following classes is most likely an abstract class?

EvoCellPhone

FijiApple

Building

Rose

5. Question : (TCO 7) When using _____, developers are required to comply with the rules defined in a framework.

inheritance

base classes

object-oriented constructs

contracts

None of the above

6. Question : (TCO 7) _____ can contain abstract methods.

Any base class

Abstract classes

Concrete classes

None of the above

7. Question : (TCO 7) C++ allows for the implementation of multiple inheritance whereas C# and Java do not. However, in languages such as C# and Java, _____ can be used to simulate multiple inheritance.

abstract methods

base classes

interfaces

implementations

8. Question : (TCO 7) Which of the following class definitions defines a legal abstract class?

class abstract Dog {
void Eat();
}
public abstract class Dog {
void Eat (){}
}
abstract private class Dog {
void Eat ();
}
public class abstract Dog {
void Eat (){}
}

9. Question : (TCO 7) Which of the following declares an abstract method in an abstract C# class?

public abstract Print();

public void Print() {}

public abstract void Print() {}

public abstract void Print();

10. Question : (TCO 7) Which of the following statements is false?

Interfaces contain a list of methods to be implemented.

Interfaces are classes with one or more unimplemented methods.

Interfaces can be used to implement a form of multiple inheritance.
Interfaces can be implemented by regular classes.