Question 1 5 pts (TCO 7) What is an abstract class? A generalized class used onl

Question

Question 1
5 pts
(TCO 7) What is an abstract class?

A generalized class used only to create related derived classes

A class without any superclasses

A class from which we create many instances

Any subclass with more than one superclass

Question 2
5 pts
(TCO 7) Programmers may be forced to adhere to a contract or a specification defined by a framework due to the use of _____.

abstract classes

base classes

is-a relationships

None of the above

Question 3
5 pts
(TCO 4) If you have a complete, working Employee class that has been thoroughly tested, and you wish to add an overloaded getSalary() method that can calculate the salary of a Manager which is the total of salary and bonus, how should this be accomplished?

Make a brand new class.

Add the method to your existing Employee class.

Add the method in the same class as the main.

Derive a new Manager class from the first Employee class.

Question 4
5 pts
(TCO 3) An Order class and RushOrder class have what type of relationships?

The Order has-a RushOrder.

The Order is-a RushOrder.

The RushOrder has-an Order.

The RushOrder is-an Order.

Question 5
5 pts
(TCO 4) In what type(s) of situation(s) would it be best to make a new derived class from a base class?

When your current class is a general form of what your new class should be

When you need to create a specialized class from an existing class

A and B

None of the above

Question 6
5 pts
(TCO 4) Suppose class Child is derived from class Parent which in turn is derived from class GrandParent. When we destroy an object of class Child, three destructors are called: i) Child, ii) Parent, iii) GrandParent. What is the order?

Child, Parent, GrandParent

Parent, GrandParent, Child

GrandParent, Child, Parent

GrandParent, Parent, Child

Question 7
5 pts
(TCO 6) What is the result of overusing inheritance?

System dependencies are created

Unnecessary relationships are created

Code is harder to understand

All of the above

Question 8
5 pts
(TCO 4) Which of the following is not a good example of a hierarchy that could be modeled with inheritance?

Order

Dog

Animals

Odd numbers

Question 9
5 pts
(TCO 1) Examine the class definition. How many members does it contain?

class clockType
{
public:
void setTime(int, int, int);
void getTime()const;
void printTime() const;
void icrementSeconds();
void incrementMinutes();
void incrementHours();
bool equalTime(const clockType&) const;
private:
int hr;
int min;
int sec;
};

7

3

An average of 5 because (7 + 3) / 2 = 5

10

Question 10
5 pts
(TCO 7) Which of the following declares a pure virtual function in an abstract C++ class?

public void cookIngredients() {}

public void cookIngredients()

public void cookIngredients()=0;

public cookIngredients();

Question 11
5 pts
(TCO 4) Suppose that bClass is a class. Which of the following statements correctly derives the class dClass from bClass?

class dClass:: public bClass
{
//classMembersList
};

class dClass: private bClass
{
//classMembersList
};

class dClass:: protected bClass
{
//classMembersList
};

class bClass: public dClass
{
//classMembersList
};

Question 12
5 pts
(TCO 8) Data/information hiding and encapsulation improves construction and maintenance because:

programs become more self-documenting.

procedural programming practices are supported.

adding additional details is isolated to a single class.

All of the above

None of the above

Question 13
5 pts
(TCO 8) What are some of the characteristics of "self-documenting" code?

Detailed comments, addressing all aspects of the code

Deep levels of nesting to ensure all situations are addressed

Straightforward algorithms

All of the above

None of the above

Question 14
5 pts
(TCO 9) Which of the following allow a programmer to reduce the complexity of an object-oriented program?

Create each class in a separate file

Using namespaces as a container for logically related items

Using namespace to create global types

All of the above

None of the above

Explanation / Answer

Q.What is an abstract class?

Answer. A generalized class used only to create related derived classes

Q. What is the result of overusing inheritance?

Answer: All of the above(System dependencies are created, Unnecessary relationships are created, Code is harder to understand)

Q. An Order class and RushOrder class have what type of relationships?
Answer.The Order has-a RushOrder.

Q. Which of the following declares a pure virtual function in an abstract C++ class?

Answer: public void cookIngredients()=0;

Q. Suppose that bClass is a class. Which of the following statements correctly derives the class dClass from bClass?

Answer:

class dClass:: public bClass
{
//classMembersList
};

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