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11th Standard English Medium Computer Science Subject Introduction to Object Oriented Programming Techniques Book Back 2 Mark Questions with Solution

Published on: 09/06/2021

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Std: 11th Standard - Computer Science

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Questions:

Generic 2

5 x 2 = 10

Write the disadvantages of OOP.

How is encapsulation and abstraction are interrelated?

What is polymorphism?

Differentiate classes and objects.

How is modular programming different from procedural programming paradigm?

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Answers Key:

Generic 2

5 x 2 = 10

Size: Object Oriented Programs are much larger than other programs.
Effort: Object Oriented Programs require a lot of work to create.
Speed: Object Oriented Programs are slower than other programs, because of their size.

Abstraction means giving only essential things and hiding unnecessary details. Encapsulation is the binding of data members and methods together in a capsule to avoid accidental changes to data from external users. i.e., encapsulation is the bundling of related algorithms and data.

Polymorphism is the ability of a message or function to be displayed in more than one form.

Class	Object
Class is a blue print or template from which objects are created.	Object is an instance of a class.
Class doesn't allocate memory when it is created.	Objects allocate memory when it is created.
Class is a logical entity.	Object is a physical entity.

Modular programming	Procedural programming
Emphasis on algorithm rather than data.	Programs are organized in the form of subroutines or sub programs.
Programs are divided into individual modules.	All data items are global.
Each modules are independent of each other and have their own local data.	Suitable for small sized software application.
Modules can work with its own data as well as with the data passed to it.	Difficult to maintain and enhance the program code as any change in data type needs to be propagated to all subroutines that use the same data type.