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  • Placement 360 CourseExplore

    • Design Patterns

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    Question 1

    Which of the following is a creational design pattern?

    • A

      Observer

    • B

      Strategy

    • C

      Singleton

    • D

      Command

    Question 2

     What does the Factory Method Pattern do?

    • A

       Shares data between classes

    • B

      Notifies observers

    • C

      Creates objects without specifying the exact class

    • D

      Destroys objects safely

    Question 3

    Which pattern provides a global point of access to a class instance?

    • A

      Factory

    • B

      Singleton

    • C

      Adapter

    • D

      Bridge

    Question 4

    The observer Pattern defines which type of relationship?

    • A

      One-to-many

    • B

      Many-to-one

    • C

      one-to-one

    • D

      Many-to-Many

    Question 5

    How does Singleton prevent multiple instances of a class?

    • A

      By using a public constructor

    • B

      By using private destructor

    • C

      By making constructor private and using a static method to access instance

    • D

      By using multiple constructors

    There are 5 questions to complete.

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