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,

1111

what is virtual function and pure virtual function ?

Infosys,

1027

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

HPCL, Hughes Systique Corporation,

1029

What is Abstract method and how different from Virtual Method?

999

What do you mean by virtual function and virtual classes?

MCN Solutions,

1069

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

iNautix,

1073

What is the best tool for modeling and ORM framework

Infosys,

1086

What is Overloading ? Is it similar to overriding ?

MCN Solutions,

1046

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

Ittiam Systems,

994

Does PowerShell support OOPs?

Microsoft,

1076

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

TCS,

1020

Is it possible to override private virtual methods?

Infosys,

1044

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

Sans Pareil IT Services,

980

Define Data Abstraction. What is its importance?

Amazon, Infosys,

1035

How to make a class accessible as a web service?

BirlaSoft,

1010

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Un-Answered Questions { OOAD }

What is the difference between aggregation and composition?

992

Why dynamic binding is used in object-oriented programming?

1135

What if we override the conflicting method in the class?

1001

What is a subclass?

1102

Why dynamic loading is used in object-oriented programming?

1047

What is the function of pure virtual functions?

962

What is the use of ‘finalize’?

1074

When will you use an interface and abstract class?

1039

What is the difference between an error and an exception?

1141

What are extrinsic and intrinsic connections in object-oriented programming?

1107

Can you instantiate an abstract class and what is an inner class?

1016

How will you define abstract classes?

1071

What is the main advantage of using inheritance?

1126

What is the difference between function overloading and over riding?

1083

Explain about abstraction?

1131

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