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What does 'CLR' stand for?

Common Language Runtime
Common Language Resource
Common Language Repository
Common Link Runtime

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What is the output of Console.WriteLine(10/3); in C#?

3
3.33
3
10-Mar

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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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Which of the following is NOT a .NET data provider?

SQL Server
OLE DB
XML
Oracle

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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 '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 statements is true about interfaces in C#?

Interfaces can have fields
Interfaces can have method definitions
Interfaces can be instantiated
Interfaces can be implemented by classes

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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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Which method is used to start a thread in C#?

Start()
Run()
Begin()
Initiate()

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

public
protected internal
internal protected
private

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What is the main difference between 'String' and 'StringBuilder' in C#?

String is mutable
StringBuilder is immutable
StringBuilder is mutable
Both are immutable

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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 value of an uninitialized bool variable in C#?

TRUE
FALSE
null
undefined

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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 of these classes allows a collection to grow or shrink dynamically?

Array
LinkedList
List
ArrayList

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

try
catch
final
finally

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How do you define a read-only property in C#?

public int MyProperty { get; }
public int MyProperty { get; set; }
public readonly int MyProperty { get; }
public int MyProperty { get { return _myProperty; } }

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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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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 statements is true about .NET assembly?

It is always a DLL
It is always an EXE
It can be either DLL or EXE
It is a namespace

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

4 bytes
8 bytes
16 bytes
32 bytes

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What is an extension method in C#?

A method that extends the size of an array
A method that adds new functionality to a type
A method that extends the life of a variable
A method that extends the scope of a variable

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

short
long
byte
float64

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Which of these is a valid statement to define a nullable type?

int? num
Nullable<int> num
Both
None

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

It allows passing a value by reference
It allows passing a reference by value
It allows passing a value by value
It allows passing a reference by reference

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What is the extension of a .NET assembly?

.dll
.exe
Both
.com

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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 base class for all exceptions in .NET?

System.Exception
System.ApplicationException
System.SystemException
System.Runtime.InteropServices.ExternalException

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

override
new
overload
extends

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