Quiz | Croma Campus

What is the use of the 'lock' statement in C#?

To provide a handle to a thread
To prevent multiple threads from accessing a resource
To release a thread from waiting
To end the execution of a thread

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What is the purpose of 'override' keyword in C#?

To hide a method
To define a new method
To override a base class method
To extend a class

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What is the purpose of the 'base' keyword in C#?

To define a base class
To call a method in the base class
To create a new base class
To define an abstract class

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Which of the following is true about the 'sealed' keyword in C#?

It allows a class to be inherited
It prevents a class from being inherited
It allows a method to be overridden
It prevents a method from being overridden

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What is the maximum size of a Decimal in C#?

4 bytes
8 bytes
16 bytes
32 bytes

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What is LINQ?

Language Integrated Query
Local Integrated Query
Language Interface Query
Local Interface Query

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What is the purpose of the 'yield' keyword in C#?

To create a lambda expression
To define a delegate
To return multiple values from a method
To simplify the implementation of an iterator

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Which of the following is true about 'const' keyword in C#?

The value can be changed at runtime
The value cannot be changed at runtime
It defines a method
It defines a variable that can be changed

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Which of the following is NOT a valid method to handle exceptions?

try
catch
final
finally

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What is the default value of an uninitialized bool variable in C#?

TRUE
FALSE
null
undefined

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Which of the following is NOT a built-in delegate in C#?

Func
Action
Predicate
Transformer

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How do you mark a method as asynchronous in C#?

Using the 'async' keyword
Using the 'await' keyword
Using the 'thread' keyword
Using the 'task' keyword

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How do you prevent a class from being inherited in C#?

By using the 'sealed' keyword
By using the 'final' keyword
By using the 'static' keyword
By using the 'readonly' keyword

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Which of the following is used to manage memory in .NET?

Garbage Collection
Finalizer
Destructor
All of the above

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What is the main advantage of using LINQ?

Better performance
Type safety
Code readability
All of the above

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

To include namespaces
To manage unmanaged resources
To declare a constant variable
To import classes from other namespaces

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What is the extension of a .NET assembly?

.dll
.exe
Both
.com

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What is the purpose of the 'is' keyword in C#?

To check the type of an object
To cast an object to a different type
To compare two objects
To define a new type

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What is the main advantage of using delegates in C#?

Type safety
Performance
Code readability
None of the above

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Which namespace is used for managing a collection of key/value pairs?

System.Collection.Generic.Dictionary
System.Collections.Specialized.NameValueCollection
System.Collections.Queue
System.Collections.Stack

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What is the use of 'throw' keyword in C#?

To catch an exception
To create an exception
To throw an exception
To log an exception

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Which keyword is used to overload a method in C#?

override
new
overload
extends

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What is the purpose of the 'params' keyword in C#?

To pass an unknown number of parameters
To define optional parameters
To define named parameters
To define output parameters

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What is the purpose of the 'static' keyword in C#?

To define a constant value
To define a variable that is shared among all instances
To define a method that cannot be overridden
To define a method that is specific to an instance

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Which interface provides a non-generic collection of objects?

IEnumerable<T>
ICollection
IList
IEnumerable

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What is the main advantage of using properties in C#?

Type safety
Performance
Encapsulation
None of the above

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What is the default access modifier for a class in C#?

public
private
internal
protected

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What does the 'finally' block do in exception handling?

It executes only when an exception occurs
It executes only when no exception occurs
It executes regardless of an exception
It stops the execution of the catch block

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What is the purpose of the 'virtual' keyword in C#?

To define a new method
To override a base class method
To allow a method to be overridden
To prevent a method from being overridden

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Which of these is not a valid C# data type?

short
long
byte
float64

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