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 3 - Which of the following pattern is used when creation of object directly is costly?

A - Bridge Pattern

B - Adapter Pattern

C - Prototype Pattern

D - Filter Pattern

Answer : A

Explanation

Prototype pattern is used when creation of object directly is costly.

Q 4 - Which of the following pattern provides a way to evaluate language grammar or expression?

A - Proxy Pattern

B - Chain of Responsibility Pattern

C - Command Pattern

D - Interpreter Pattern

Answer : D

Explanation

Interpreter pattern provides a way to evaluate language grammar or expression.

Q 6 - In which of the following pattern, a class behavior changes based on its state?

A - State Pattern

B - Null Object Pattern

C - Strategy Pattern

D - Template Pattern

Answer : A

Explanation

In State pattern, a class behavior changes based on its state.

Q 7 - Which of the following pattern is used to to decouple presentation tier and business tier?

A - Visitor Pattern

B - MVC Pattern

C - Business Delegate Pattern

D - Composite Entity Pattern

Answer : C

Explanation

Business Delegate pattern is used to decouple presentation tier and business tier.

Q 8 - Which of the following pattern is used when we want to locate various services using JNDI lookup?

A - DAO Pattern

B - Front Controller Pattern

C - Intercepting Pattern

D - Service Locator Pattern

Answer : D

Explanation

Service Locator Pattern is used when we want to locate various services using JNDI lookup.

Q 10 - In MVC pattern, Model represents an object or JAVA POJO carrying data. It can also have logic to update controller if its data changes.

A - true

B - false

Answer : A

Explanation

True. In MVC pattern, Model represents an object or JAVA POJO carrying data. It can also have logic to update controller if its data changes.

design_pattern_questions_answers.htm
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