Miscellaneous in C Sharp MCQ question and answer with solution

1

What is the purpose of the "using" keyword in C#?

A) To define namespaces B) To declare variables C) To import external libraries D) To create instances of classes

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Answer & Solution

Answer: Option C

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2

What does the "break" keyword do in a switch statement?

A) Exits the switch statement B) Skips the current iteration C) Continues to the next iteration D) Throws an exception

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Answer & Solution

Answer: Option A

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3

Which of the following is NOT a valid C# access modifier?

A) public B) internal C) protected D) private

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Answer & Solution

Answer: Option C

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4

What is the purpose of the "readonly" keyword in C#?

A) To declare a constant B) To prevent a variable from changing C) To allow a variable to be changed D) To declare a static variable

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Answer & Solution

Answer: Option B

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5

What does the "this" keyword refer to in C#?

A) The global namespace B) The derived class instance C) The base class instance D) The current class instance

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Answer & Solution

Answer: Option D

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6

What is the purpose of the "async" and "await" keywords in C#?

A) To define a new thread B) To handle exceptions C) To perform asynchronous operations D) To declare a class

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Answer & Solution

Answer: Option C

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7

What does the "params" keyword allow in C#?

A) Variable number of method arguments B) Passing multiple arguments C) Passing array of arguments D) Passing reference to arguments

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Answer & Solution

Answer: Option C

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8

Which of the following is NOT a valid C# data type?

A) char B) double C) string D) array

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Answer & Solution

Answer: Option D

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9

What does the "is" keyword do in C#?

A) Checks if an object is null B) Checks if an object is of a certain type C) Checks if an object is empty D) None of the above

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Answer & Solution

Answer: Option B

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10

What is the purpose of the "out" keyword in C# method parameters?

A) To pass parameters by reference B) To pass parameters by value C) To indicate the return value D) To indicate an output parameter

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Answer & Solution

Answer: Option D

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Miscellaneous in C Sharp MCQ question and answer with solution | C# Program MCQs