OOAD Interview Questions, Answers for Freshers and Experienced asked in various Company Job Interviews

OOAD Interview Questions

Questions Answers Views Company eMail

Why are virtual users created?

Wipro,

830

what is virtual function and pure virtual function ?

Infosys,

768

What are virtual functions, base class pointer, derived class pointer, biding references?

HPCL, Hughes Systique Corporation,

772

What is Abstract method and how different from Virtual Method?

724

What do you mean by virtual function and virtual classes?

MCN Solutions,

757

What is polymorphism? When is it employed? give an example.

iNautix,

796

What is the best tool for modeling and ORM framework

Infosys,

773

What is Overloading ? Is it similar to overriding ?

MCN Solutions,

790

Explain the use of Vtable and what are the various problems to override the functions?

Ittiam Systems,

737

Does PowerShell support OOPs?

Microsoft,

792

What is data abstraction? what are the three levels of data abstraction with Example?

TCS,

776

Is it possible to override private virtual methods?

Infosys,

770

Give any criteria when you use an abstract class and an interface?

Sans Pareil IT Services,

750

Define Data Abstraction. What is its importance?

Amazon, Infosys,

764

How to make a class accessible as a web service?

BirlaSoft,

730

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Un-Answered Questions { OOAD }

What do you mean by data hiding?

843

What's the main difference between arraylist / hashmap and vector / hashtable?

772

what is virtual function and pure virtual function ?

768

What is meant by inheritance? what are the advantages of inheritance?

756

Which oops concept exposes only necessary information to the calling functions?

804

Write a note about inheritance?

727

Why do we separate interface from implementation?

793

What are the interfaces you used in beans?

755

Why are outlet connections required in object-oriented programming?

784

How a program can be structured using the concept of object oriented programming?

821

What is the syntax of object oriented method call?

762

What are inner classes and what is the practical implementation of inner classes?

692

What are virtual functions, base class pointer, derived class pointer, biding references?

772

Explain about instance in object oriented programming?

786

Is is possible to define our own functional interface?

789

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