OOP and Encapsulation - Quiz

RationalDB Database Design

OOP and encapsulation - Quiz

Each question is worth one point. Select the best answer for each question

1.	The keyword `private` restricts the access of `class` or `struct` members to: Please select the best answer.
	A.	`const` functions
	B.	`static` functions
	C.	member functions
	D.	clients

2.	What is the difference between an object and a `class`? Please select the best answer.
	A.	An object is an extension of the `class` construct whose default access privilege is `public`.
	B.	The term object is just another way of referring to the `public` data members of a `class`.
	C.	An object is an initialized `class` variable.
	D.	A `class` is an initialized object variable.

3.	If we have class card { public: int s; }; card a; card* p; we can use _________ to access `int s`: Please select the best answer.
	A.	`p.s`
	B.	`a.s`
	C.	`p -> int`
	D.	`a -> s`

4.	In object-oriented software design, there is at least one extra step before you get to the coding of algorithms. That step is the design of: Please select the best answer.
	A.	classes that are appropriate for the problem at hand
	B.	member functions
	C.	program control flow
	D.	the class's interface

5.	An interface in C++ is a Please select the best answer.
	A.	program that allows easy conversion of another program's data
	B.	list of argument types in a function's parameter list
	C.	library for performing input and output
	D.	class's public members

6.	What is the difference between a `struct` and a `class` in C++? Please select the best answer.
	A.	A `struct` cannot have member functions.
	B.	A `class` has a default privacy specification of `public`.
	C.	A `class` has a default privacy specification of `private`.
	D.	A `struct` cannot have `private` members.

7.	An object is _____________ of a `class`. Please select the best answer.
	A.	an instance
	B.	an interface
	C.	an encapsulation
	D.	a member function

Score =
Correct answers:

Explanation