.NET Programming MCQs with answers Page - 43

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Q. Which collection allows key-value pairs in .NET?

  • (A) List
  • (B) Array
  • (C) Dictionary
  • (D) Queue

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Q. What is LINQ?

  • (A) Language Integrated Query
  • (B) Logical Integrated Query
  • (C) Linked Interface Query
  • (D) Local Indexed Query

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Q. What is the base class of all classes in .NET?

  • (A) System.Class
  • (B) System.Base
  • (C) System.Object
  • (D) System.Root

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Q. Which keyword is used to prevent inheritance in C#?

  • (A) stop
  • (B) sealed
  • (C) static
  • (D) private

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Q. Which method is used to release unmanaged resources?

  • (A) Dispose()
  • (B) Close()
  • (C) Finalize()
  • (D) Delete()

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Q. What is a namespace in .NET?

  • (A) A class
  • (B) A method
  • (C) A container for classes
  • (D) A variable

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Q. Which of the following is a value type?

  • (A) String
  • (B) Array
  • (C) Struct
  • (D) Class

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Q. What is boxing in .NET?

  • (A) Converting reference type to value type
  • (B) Converting value type to reference type
  • (C) Casting object to string
  • (D) Memory allocation

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Q. What is unboxing?

  • (A) Value type to reference type
  • (B) Reference type to value type
  • (C) Object to string
  • (D) Class to struct

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Q. Which keyword is used to define an abstract class?

  • (A) virtual
  • (B) interface
  • (C) abstract
  • (D) override

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