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OOP Concepts and Java Packages

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Questions and Answers

In object-oriented programming, what is the term for an object that is created without a name but has a reference?

Hypothetical object
An object without having any name but having a reference (correct)
Real object
Logical object

What is the purpose of the final keyword in object-oriented programming?

To make a class inheritable
To make a class extendable
To make a method overridable
To prevent a method from being overridden (correct)

What is a key feature of encapsulation in object-oriented programming?

Polymorphism
Inheritance
Hiding data and behavior (correct)
Abstract classes

What is an object in object-oriented programming?

An instance of a class (D) Signup and view all the answers

Which of the following is NOT a feature of object-oriented programming?

Hypothetical abstraction (A) Signup and view all the answers

Which two features of object-oriented programming are related but distinct concepts?

Encapsulation and Abstraction (D) Signup and view all the answers

Which of the following is a mechanism by which a class protects the code inside it?

Using Access specifiers (A) Signup and view all the answers

Which feature of OOPS derives the class from another class?

Inheritance (A) Signup and view all the answers

Which of the following is an example of operator overloading?

<ul> <li>(C)</li> </ul> Signup and view all the answers

What is the 'Basis of Encapsulation'?

All of the mentioned (B) Signup and view all the answers

Which of the following supports the concept of hierarchical classification?

Inheritance (C) Signup and view all the answers

What is the functionality of 'Encapsulation'?

Binds together code and data (B) Signup and view all the answers

What is the primary concern in LANs that necessitates a framing method?

Defining the end of a frame and the start of the next (A) Signup and view all the answers

Which layer ensures data interoperability between devices?

Presentation layer (A) Signup and view all the answers

What is the purpose of the session layer?

Linking the network support layers (B) Signup and view all the answers

Which layer is responsible for circuit switching?

Transport layer (C) Signup and view all the answers

What is the primary function of the data link layer?

Moving frames from one node to the next (A) Signup and view all the answers

What is an example of an application layer service?

All of the above (D) Signup and view all the answers