.NET Programming MCQs with answers Page - 27

Here, you will find a collection of MCQ questions on .NET Programming. Go through these questions to enhance your preparation for upcoming examinations and interviews.

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Ram Sharma • 3.40K Points
Extraordinary

Q. What is the output type of a LINQ `Count()` method?

  • (A) string
  • (B) decimal
  • (C) int
  • (D) bool

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Ram Sharma • 3.40K Points
Extraordinary

Q. What does `yield return` do in C#?

  • (A) Terminates method execution
  • (B) Pauses and resumes method execution
  • (C) Returns all values at once
  • (D) Throws an exception

R

Ram Sharma • 3.40K Points
Extraordinary

Q. Which collection class maintains the insertion order?

  • (A) Stack
  • (B) Queue
  • (C) Dictionary
  • (D) HashSet

R

Ram Sharma • 3.40K Points
Extraordinary

Q. Which method can be used to convert a string to uppercase in C#?

  • (A) ToUpper()
  • (B) MakeUpper()
  • (C) ConvertUpper()
  • (D) UpperCase()

R

Ram Sharma • 3.40K Points
Extraordinary

Q. What is the use of `??` operator in C#?

  • (A) Null checking and fallback
  • (B) Bitwise operation
  • (C) Type casting
  • (D) String formatting

R

Ram Sharma • 3.40K Points
Extraordinary

Q. What does `string.IsNullOrEmpty()` check for?

  • (A) Only null
  • (B) Only empty string
  • (C) Null or empty
  • (D) Null or whitespace

R

Ram Sharma • 3.40K Points
Extraordinary

Q. Which type of loop guarantees at least one execution?

  • (A) for
  • (B) while
  • (C) do-while
  • (D) foreach

R

Ram Sharma • 3.40K Points
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Q. Which keyword is used to define a property in C#?

  • (A) prop
  • (B) getset
  • (C) property
  • (D) get; set;

R

Ram Sharma • 3.40K Points
Extraordinary

Q. What is the role of the `Main()` method in a C# console application?

  • (A) Handles exceptions
  • (B) Defines application settings
  • (C) Serves as the entry point
  • (D) Initializes the database

R

Ram Sharma • 3.40K Points
Extraordinary

Q. Which component of .NET compiles IL to machine code at runtime?

  • (A) CLR
  • (B) JIT Compiler
  • (C) CTS
  • (D) FCL

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