C# (C Sharp) MCQs with answers Page - 32

Here, you will find a collection of MCQ questions on C# (C Sharp). Go through these questions to enhance your preparation for upcoming examinations and interviews.

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Q. What is the proper header for a class that intends to use an interface.

  • (A) class MyCalss {IFace
  • (B) class MyClass : IFace
  • (C) class MyClass ; IFace
  • (D) class MyClass IFace

A

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Q. In order for a class to use an interface, it must

  • (A) inherit the properties of the interface
  • (B) contain the same methods as the interface
  • (C) create an interface objects
  • (D) all of the above

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Q. Every class directly or indirectly extends the______class.

  • (A) Console
  • (B) Drawing
  • (C) Object
  • (D) System

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Q. The concept of composition specifies that you can.

  • (A) Reduce errors by remaining composed during programming
  • (B) Compose good code with C#
  • (C) Compose C# projects with different objects
  • (D) all of the above

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Q. Polymorphism occurs when the methods of the child class.

  • (A) Are Virtual
  • (B) Have different return types and arguments than the parent class
  • (C) Maintain the same return type and arguments as the parent class, but implement it differently
  • (D) Override the parent class methods but maintain the implementation

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Q. To output the value of multidimensional array, Console.WriteLines(___)

  • (A) myArray(1),(3);
  • (B) myArray{1}{3};
  • (C) myArray[1.3];
  • (D) myArray[1][3];

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Q. The code public class B : A { }

  • (A) Defines a class that inherits the public and protected methods of A only
  • (B) Defines a class that inherits all the methods of A
  • (C) Errors
  • (D) Both A and B

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Q. A method_____an exception when that method detects that a problem has occured.

  • (A) Trys
  • (B) Catches
  • (C) Throws
  • (D) None of these

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Q. Exception objects are derived from the class.

  • (A) Try
  • (B) Catch
  • (C) Exception
  • (D) Event

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Q. An abstract class

  • (A) may contain instance variables
  • (B) may contain constructors
  • (C) may extend another class
  • (D) All of the above

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