Wells Fargo Encapsulation Problems with Solutions Quiz-1

Question 1

Time: 00:00:00

Which of the following options is true with regard to private and protected members of a class?

Both have the same properties with regard to an object of the class.

Private members cannot be directly accessed, while protected members can be directly accessed.

Protected members cannot be accessed by member functions, while private members can be accessed by member functions.

Private and protected members are same in all regards

private members of a class like any private method can only be accessed by any other method in this class,not from a outside class method. But in case of any protected method the method can be accessed by a outside class method if the class is sub class of the accessed method class.

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Question 2

Time: 00:00:00

which of the given options refers to data encapsulation in oops ?

The data and operation for an object are defined and fixed.

Data of an object is encapsulated in its class

Data is hidden for an object

A class can have multiple objects

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Question 3

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There is a class which contains two integers as private members. There are two member functions (public) defined on it, one to add the two integers and another to subtract the two integers. Ravi wants to add a new functionality, which enables multiplication of the two numbers. Which one of the following options he should adopt?

He should define a third member function (public) which multiplies the two numbers.

He should define member functions (public) to return value of both the integers and then multiply them in his code. By returning the values, he can in future do any operation on them giving extensibility to the code.

He should define a third member function (private) which multiplies the two numbers.

He should define member functions (private) to return value of both the integers and then multiply them in his code. By returning the values, he can in future do any operation on them giving extensibility to the code.

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Question 4

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In c++ how are protected members of a base class accessed in derived class when inherited privately

Privately

Publicly

Protectedly

Not Inherited

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Question 5

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Which of the following concepts means wrapping up of data and functions together?

Abstraction

Encapsulation

Inheritance

Polymorphism

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Question 6

Time: 00:00:00

Yukta created an interface to use it in different parts of the program by implementing it. But she forgot to specify the access specifier for each contained method. What will be the access specifier of the methods that will be inherited/implemented?

Public

Private

Protected

Will generate Error

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