Design Patterns Online Quiz


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Following quiz provides Multiple Choice Questions (MCQs) related to Design Patterns Framework. You will have to read all the given answers and click over the correct answer. If you are not sure about the answer then you can check the answer using Show Answer button. You can use Next Quiz button to check new set of questions in the quiz.

Questions and Answers

Q 2 - If we serialize a singleton object and deserialize it then the result object will be same.

A - true

B - false

Answer : B

Explanation

false. Deserializing a serialized object will yield a different object.

Q 3 - Which of the following pattern is used when we need to decouple an abstraction from its implementation so that the two can vary independently?

A - Bridge Pattern

B - Adapter Pattern

C - Prototype Pattern

D - Filter Pattern

Answer : A

Explanation

Bridge pattern is used when we need to decouple an abstraction from its implementation so that the two can vary independently.

Q 4 - Which of the following pattern hides the complexities of the system and provides an interface to the client using which the client can access the system?

A - Composite Pattern

B - Facade Pattern

C - Flyweight Pattern

D - Decorator Pattern

Answer : B

Explanation

Facade pattern hides the complexities of the system and provides an interface to the client using which the client can access the system.

Q 5 - Which of the following pattern is used to get a way to access the elements of a collection object in sequential manner without any need to know its underlying representation?

A - Iterator Pattern

B - Mediator Pattern

C - Memento Pattern

D - Observer Pattern

Answer : A

Explanation

Iterator pattern is used to get a way to access the elements of a collection object in sequential manner without any need to know its underlying representation.

Q 8 - Which of the following pattern creates object without exposing the creation logic to the client and refer to newly created object using a common interface?

A - Factory Pattern

B - Abstract Factory Pattern

C - Singleton Pattern

D - Transfer Object Pattern

Answer : A

Explanation

Factory Pattern creates object without exposing the creation logic to the client and refer to newly created object using a common interface.

Answer : A

Explanation

Business Object , Transfer Object, Client are the entities of Transfer Object pattern.

design_pattern_questions_answers.htm
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