C# Online Quiz – Level Beginner

Test your C# skills with mycodeblock.com Online Quiz. This quiz is designed to target beginner-level programmers.

Score

The quiz contains 20 questions, each correct answer will give you 1 point. To pass the quiz you need to score at least 70% i.e. 14 correct answers.

If you don’t know C# or you want to get a deep understanding of C#, we suggest you follow the below link to learn C# from scratch.

C# 10 | Ultimate Guide – Beginner to Advanced | Master class

Start Quiz

All the best.

QUIZ START

#1. Which of the following is the default access specifier of a class member function?

internal

internal

public

public

protected

protected

private

private

#2. Which of the following is a reserved keyword in C#?

foreach

foreach

as

as

abstract

abstract

All of the above

All of the above

#3. Which of the followings is not allowed in C# as access modifier?

public

public

friend

friend

internal

internal

protected

protected

#4. How do you make a method in an abstract class overridable?

Make it public

Make it public

Make it static

Make it static

Make it private

Make it private

Make it virtual

Make it virtual

#5. LINQ stands for?

Language Integrated Query.

Language Integrated Query.

Local Integrated Query.

Local Integrated Query.

Langugae Included Query.

Langugae Included Query.

Lazy Integrated Query.

Lazy Integrated Query.

#6. When using a thread pool what happens to a given thread after it finishes the task?

The thread is destroyed and memory is freed up.

The thread is destroyed and memory is freed up.

The thread runs in loop until the next assignment.

The thread runs in loop until the next assignment.

The thread goes inactive in the background and waits for garbage collection.

The thread goes inactive in the background and waits for garbage collection.

The thread returns to the pool for re-use.

The thread returns to the pool for re-use.

#7. In interface, which of the following access specifiers can be used?

public

public

private

private

protected

protected

None of the above

None of the above

#8. Which of the following statements are correct about an interface in C#.NET?

One class can implement only one interface.

One class can implement only one interface.

Interfaces can be inherited.

Interfaces can be inherited.

Interfaces cannot be inherited.

Interfaces cannot be inherited.

All interfaces are derived from an Object class.

All interfaces are derived from an Object class.

#9. Which of the following statements is correct?

A constructor can be used to set default values and limit instantiation.

A constructor can be used to set default values and limit instantiation.

C# provides a copy constructor.

C# provides a copy constructor.

Destructors are used with classes as well as structures.

Destructors are used with classes as well as structures.

A class can have more than one destructor.

A class can have more than one destructor.

#10. Which of the following are value types in C#?

Int32

Int32

Double

Double

Decimal

Decimal

All of the above

All of the above

#11. Which of the statement for Static Class is true?

Static Class allows us to divide their properties, methods and events into multiple source files.

Static Class allows us to divide their properties, methods and events into multiple source files.

Static Class is created using the "Sealed" keyword.

Static Class is created using the "Sealed" keyword.

If we want to use Static Class then it must be inherited in a Sub Class.

If we want to use Static Class then it must be inherited in a Sub Class.

Static Class cannot be instantiated, in other words we cannot create an object of that class using the new keyword.

Static Class cannot be instantiated, in other words we cannot create an object of that class using the new keyword.

#12. Which of the following is base namespace in the .NET Framework Class Library?

System.IO

System.IO

Object

Object

System.Base

System.Base

System

System

#13. Which of these can be used to concatenate two string objects in C#?

+=

+=

+

+

&&

&&

concat

concat

#14. What is an object in C#?

An instance of a class that includes fields, properties and methods

An instance of a class that includes fields, properties and methods

A class including its variables and functions

A class including its variables and functions

A primitive datatype that can be created only at compile time

A primitive datatype that can be created only at compile time

A value type that can only be used with an abstract class

A value type that can only be used with an abstract class

#15. Which code snippet declares an anonymous type named userData?

userData = new {name = "john", age = 32};

userData = new {name = "john", age = 32};

var userData = new {name = "john", age = 32};

var userData = new {name = "john", age = 32};

AType userData = new AType {name = "john", age = 32};

AType userData = new AType {name = "john", age = 32};

Anonymous userData = new Anonymous {name = "john", age = 32};

Anonymous userData = new Anonymous {name = "john", age = 32};

#16. Which of the following is a reference type in C#?

String

String

Long

Long

Boolean

Boolean

None of the above

None of the above

#17. Which operator can be used to compare two values?

=

=

==

==

++

++

!=

!=

#18. Which of the following can be used to terminate a while loop and transfer control outside the while loop?

Exit while

Exit while

continue

continue

break

break

None of the above

None of the above

#19. What is the result of this code snippet? 1 > 2 ? "2 is greater than 1" : "1 is less than 2"

2 is greater than 1

2 is greater than 1

1 is less than 2

1 is less than 2

null

null

None of the above

None of the above

#20. Which option best defines C# asynchronous programming?

Reactive

Reactive

Task based

Task based

Callback based

Callback based

Inherited Callback

Inherited Callback

Finish

Results

-

Good Job, you passed

Sorry, you didn’t pass

C# 10 | Ultimate Guide – Beginner to Advanced | Master class