Microsoft C# Programming Quiz

1. Which keyword is used to create a new instance of a class in C#?

New

Create

Instance

Allocate

2. What is the difference between 'ref' and 'out' parameters in C#?

Ref requires initialization before passing; out does not

Out requires initialization before passing; ref does not

They are identical in functionality

Ref is for value types; out is for reference types

3. In C#, what does the 'async' keyword do?

Makes a method run on a separate thread

Enables asynchronous programming using await

Prevents thread blocking

Automatically parallelizes code

4. Which access modifier allows a member to be accessed only within the same class?

Public

Protected

Private

Internal

5. What is the purpose of the 'using' statement in C#?

Import namespaces

Automatically dispose of resources

Create variable scope

Define class inheritance

6. In C#, structs are value types and classes are reference types. True or False?

True

False

7. Which of the following is NOT a valid LINQ method?

Select

Where

Fetch

OrderBy

8. What does the '?.' operator in C# represent?

Null coalescing

Null-conditional operator

Ternary operator

Safe navigation only in arrays

Submit

10. Which interface in C# is used to implement custom iteration?

IEnumerable

IEnumerator

IIterable

ICollection

Submit

12. Which of the following correctly describes C# properties?

They are public fields

They provide get and set accessors for encapsulation

They cannot have validation logic

They are only for read-only data

Submit

14. What is the primary purpose of delegates in C#?

Type-safe function pointers and callbacks

Creating new classes

Managing memory allocation

Declaring variables

15. C# supports multiple inheritance through classes. True or False?

True

False

Microsoft C# Programming Quiz

1. Which keyword is used to create a new instance of a class in C#?

2.

What first name or nickname would you like us to use?

2. What is the difference between 'ref' and 'out' parameters in C#?

3. In C#, what does the 'async' keyword do?

4. Which access modifier allows a member to be accessed only within the same class?

5. What is the purpose of the 'using' statement in C#?

6. In C#, structs are value types and classes are reference types. True or False?

7. Which of the following is NOT a valid LINQ method?

8. What does the '?.' operator in C# represent?

9. In C#, an abstract class can contain____.

10. Which interface in C# is used to implement custom iteration?

11. The 'lock' keyword in C# is used for____.

12. Which of the following correctly describes C# properties?

13. In C#, the 'virtual' keyword allows a method to be____.

14. What is the primary purpose of delegates in C#?

15. C# supports multiple inheritance through classes. True or False?