150+ C# Programming Solved MCQs

These multiple-choice questions (MCQs) are designed to enhance your knowledge and understanding in the following areas: Computer Science Engineering (CSE) , Information Technology Engineering (IT) , Master of Computer Applications (MCA) , Programming Languages .

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1.	Which of the following statements are TRUE about the .NET CLR? 1. It provides a language-neutral development & execution environment. 2. It ensures that an application would not be able to access memory that it is not authorized to access. 3. It provides services to run "managed" applications. 4. The resources are garbage collected. 5. It provides services to run "unmanaged" applications.
A.	Only 1 and 2
B.	Only 1,2 and 4
C.	1,2,3,4
D.	Only 4 and 5
Answer» C. 1,2,3,4

2.	Which of the following are valid .NET CLR JIT performance counters? 1. Total memory used for JIT compilation 2. Average memory used for JIT compilation 3. Number of methods that failed to compile with the standard JIT 4. Percentage of processor time spent performing JIT compilation 5. Percentage of memory currently dedicated for JIT compilation
A.	1,5
B.	3,4
C.	1,2
D.	4,5
Answer» B. 3,4

3.	Which of the following statements is correct about Managed Code?
A.	Managed code is the code that is compiled by the JIT compilers.
B.	Managed code is the code where resources are Garbage Collected.
C.	Managed code is the code that runs on top of Windows.
D.	Managed code is the code that is written to target the services of the CLR.
Answer» D. Managed code is the code that is written to target the services of the CLR.

4.	Which of the following are NOT true about .NET Framework? 1. It provides a consistent object-oriented programming environment whether object code is stored and executed locally, executed locally but Internet-distributed, or executed remotely. 2. It provides a code-execution environment that minimizes software deployment and versioning conflicts. 3. It provides a code-execution environment that promotes safe execution of code, including code created by an unknown or semi-trusted third party. 4. It provides different programming models for Windows-based applications and Web-based applications. 5. It provides an event driven programming model for building Windows Device Drivers.
A.	1,2
B.	2,4
C.	4,5
D.	1,2,4
Answer» C. 4,5

5.	Which of the following components of the .NET framework provide an extensible set of classes that can be used by any .NET compliant programming language?
A.	NET class libraries
B.	Common Language Runtime
C.	Common Language Infrastructure
D.	Component Object Model
Answer» A. NET class libraries

6.	Which of the following .NET components can be used to remove unused references from the managed heap?
A.	Common Language Infrastructure
B.	CLR
C.	Garbage Collector
D.	Class Loader
Answer» C. Garbage Collector

7.	Which of the following statements correctly define .NET Framework?
A.	It is an environment for developing, building, deploying and executing Desktop Applications, Web Applications and Web Services
B.	It is an environment for developing, building, deploying and executing only Web Applications.
C.	It is an environment for developing, building, deploying and executing Distributed Applications.
D.	It is an environment for developing, building, deploying and executing Web Services.
Answer» A. It is an environment for developing, building, deploying and executing Desktop Applications, Web Applications and Web Services

8.	Which of the following constitutes the .NET Framework? 1. ASP.NET Applications 2. CLR 3. Framework Class Library 4. WinForm Applications 5. Windows Services
A.	1,2
B.	2,3
C.	3,4
D.	2,5
Answer» B. 2,3

9.	Which of the following assemblies can be stored in Global Assembly Cache?
A.	Private Assemblies
B.	Friend Assemblies
C.	Shared Assemblies
D.	Public Assemblies
Answer» C. Shared Assemblies

10.	Code that targets the Common Language Runtime is known as
A.	Unmanaged
B.	Distributed
C.	Legacy
D.	Managed code
Answer» D. Managed code

11.	Which of the following statements is correct about the .NET Framework?
A.	NET Framework uses DCOM for achieving language interoperability.
B.	NET Framework is built on the DCOM technology.
C.	NET Framework uses DCOM for making transition between managed and unmanaged code.
D.	NET Framework uses DCOM for creating unmanaged applications.
Answer» C. NET Framework uses DCOM for making transition between managed and unmanaged code.

14.	Which of the following statements are correct about a .NET Assembly? 1. It is the smallest deployable unit. 2. Each assembly has only one entry point - Main(), WinMain() or DLLMain(). 3. An assembly can be a Shared assembly or a Private assembly. 4. An assembly can contain only code and data. 5. An assembly is always in the form of an EXE file.
A.	1,2,3
B.	2,4,5
C.	1,3,5
D.	1,2
Answer» D. 1,2

17.	In C#, a subroutine is called a ________.
A.	Function
B.	Metadata
C.	Method
D.	Managed code
Answer» C. Method

18.	All C# applications begin execution by calling the _____ method.
A.	Class()
B.	Main()
C.	Submain()
D.	Namespace
Answer» B. Main()

19.	A _______ is an identifier that denotes a storage location
A.	Constant
B.	Reference type
C.	Variable
D.	Object
Answer» C. Variable

12.	Which of the following benefits do we get on running managed code under CLR? 1. Type safety of the code running under CLR is assured. 2. It is ensured that an application would not access the memory that it is not authorized to access. 3. It launches separate process for every application running under it. 4. The resources are Garbage collected.
A.	Only 1 and 2
B.	Only 2, 3 and 4
C.	Only 1, 3 and 4
D.	All of the above
Answer» D. All of the above

13.	Which of the following jobs are done by Common Language Runtime? 1. It provides core services such as memory management, thread management, and remoting. 2. It enforces strict type safety. 3. It provides Code Access Security. 4. It provides Garbage Collection Services.
A.	Only 1 and 2
B.	Only 3 and 4
C.	Only 1, 3 and 4
D.	All of the above
Answer» D. All of the above

15.	Which of the following statements are correct about JIT? 1. JIT compiler compiles instructions into machine code at run time. 2. The code compiler by the JIT compiler runs under CLR. 3. The instructions compiled by JIT compilers are written in native code. 4. The instructions compiled by JIT compilers are written in Intermediate Language (IL) code. 5. The method is JIT compiled even if it is not called
A.	1, 2, 3
B.	2,4
C.	3,4,5
D.	1,2
Answer» A. 1, 2, 3

16.	Which of the following are parts of the .NET Framework? 1. The Common Language Runtime (CLR) 2. The Framework Class Libraries (FCL) 3. Microsoft Published Web Services 4. Applications deployed on IIS 5. Mobile Applications
A.	Only 1, 2, 3
B.	Only 1, 2
C.	Only 1, 2, 4
D.	Only 4,5
Answer» B. Only 1, 2

20.	_________ are reserved, and cannot be used as identifiers.
A.	Keywords
B.	literal
C.	variables
D.	Identifiers
Answer» A. Keywords

21.	Boxing converts a value type on the stack to an ______ on the heap.
A.	Bool type
B.	Instance type
C.	Class type
D.	Object type
Answer» D. Object type

22.	The character pair?: is an________________available in C#.
A.	Unary operator
B.	Ternary operator
C.	Decision operator
D.	Functional operator
Answer» B. Ternary operator

23.	In C#, all binary operators are ______.
A.	Center-associative
B.	Right-associative
C.	Left-associative
D.	Top-associative
Answer» C. Left-associative

24.	An _______ is a symbol that tells the computer to perform certain mathematical or logical manipulations.
A.	Operator
B.	Expression
C.	Condition
D.	Logic
Answer» A. Operator

25.	A _____ is any valid C# variable ending with a colon.
A.	goto
B.	Label
C.	Logical
D.	Bitwise
Answer» B. Label

150+ C# Programming Solved MCQs

Which of the following statements is correct about Managed Code?

Which of the following components of the .NET framework provide an extensible set of classes that can be used by any .NET compliant programming language?

Which of the following .NET components can be used to remove unused references from the managed heap?

Which of the following statements correctly define .NET Framework?

Which of the following constitutes the .NET Framework? 1. ASP.NET Applications 2. CLR 3. Framework Class Library 4. WinForm Applications 5. Windows Services

Which of the following assemblies can be stored in Global Assembly Cache?

Code that targets the Common Language Runtime is known as

Which of the following statements is correct about the .NET Framework?

Which of the following jobs are done by Common Language Runtime? 1. It provides core services such as memory management, thread management, and remoting. 2. It enforces strict type safety. 3. It provides Code Access Security. 4. It provides Garbage Collection Services.

Which of the following are parts of the .NET Framework? 1. The Common Language Runtime (CLR) 2. The Framework Class Libraries (FCL) 3. Microsoft Published Web Services 4. Applications deployed on IIS 5. Mobile Applications

In C#, a subroutine is called a ________.

All C# applications begin execution by calling the _____ method.

A _______ is an identifier that denotes a storage location

_________ are reserved, and cannot be used as identifiers.

Boxing converts a value type on the stack to an ______ on the heap.

The character pair?: is an________________available in C#.

In C#, all binary operators are ______.

An _______ is a symbol that tells the computer to perform certain mathematical or logical manipulations.

A _____ is any valid C# variable ending with a colon.

C# has _______ operator, useful for making two way decisions.

________causes the loop to continue with the next iteration after skipping any statements in between.

An ____ is a group of contiguous or related data items that share a common name.

Arrays in C# are ______ objects

Multidimensional arrays are sometimes called _______ Arrays.

Which of the following define the rules for .Net Languages?

___________ namespace is not defined in the .NET class library.

Dot Net Framework consists of :

Which of the following is the root of the .NET type hierarchy?

Code that targets the Common Language Runtime is known as

Which of the following statements correctly define .NET Framework?

How many types of compilers availbale under CLR?

Which of the following utilities can be used to compile managed assemblies into processor-specific native code?

Which of the following is NOT an Integer?

What will be the output of the following code snippet when it is executed? int x = 1; float y = 1.1f; short z = 1; Console.Write.Line((float) x + y * z - (x += (short) y));

Which of the following is the correct size of a Decimal datatype?

Which of the following is the correct ways to set a value 3.14 in a variable pi such that it cannot be modified?

Which of the following can be used to terminate a while loop and transfer control outside the loop? 1. exit while 2. continue 3. exit statement 4. break 5. goto

Which of the following is the correct output for the C#.NET code snippet given below? Console.WriteLine(13 / 2 + " " + 13 % 2);

Which of the following is the correct way to create an object of the class Sample? 1. Sample s = new Sample(); 2. Sample s; 3. Sample s; s = new Sample(); 4. s = new Sample();

Which of the following constitutes the .NET Framework?
1. ASP.NET Applications
2. CLR
3. Framework Class Library
4. WinForm Applications
5. Windows Services

Which of the following jobs are done by Common Language Runtime?
1. It provides core services such as memory management, thread management, and remoting.
2. It enforces strict type safety.
3. It provides Code Access Security.
4. It provides Garbage Collection Services.

Which of the following are parts of the .NET Framework?
1. The Common Language Runtime (CLR)
2. The Framework Class Libraries (FCL)
3. Microsoft Published Web Services
4. Applications deployed on IIS
5. Mobile Applications

What will be the output of the following code snippet when it is executed?
int x = 1;
float y = 1.1f;
short z = 1;
Console.Write.Line((float) x + y * z - (x += (short) y));

Which of the following can be used to terminate a while loop and transfer control outside the loop?
1. exit while
2. continue
3. exit statement
4. break
5. goto

Which of the following is the correct way to create an object of the class Sample?
1. Sample s = new Sample();
2. Sample s;
3. Sample s; s = new Sample();
4. s = new Sample();

26.	C# has _______ operator, useful for making two way decisions.
A.	Looping
B.	Functional
C.	Exponential
D.	Conditional
Answer» D. Conditional

27.	________causes the loop to continue with the next iteration after skipping any statements in between.
A.	Loop
B.	Exit
C.	Break
D.	Continue
Answer» D. Continue

28.	An ____ is a group of contiguous or related data items that share a common name.
A.	Operator
B.	Integer
C.	Exponential
D.	Array
Answer» D. Array

29.	Arrays in C# are ______ objects
A.	Reference
B.	Logical
C.	Value
D.	Arithmetic
Answer» A. Reference

30.	Multidimensional arrays are sometimes called _______ Arrays.
A.	Square
B.	Triangular
C.	Rectangular
D.	Cube
Answer» C. Rectangular

31.	Which of the following define the rules for .Net Languages?
A.	GAC
B.	CLS
C.	CTS
D.	CLR
Answer» B. CLS

32.	___________ namespace is not defined in the .NET class library.
A.	System.CodeDom
B.	System
C.	System.IO
D.	System.Text
Answer» A. System.CodeDom

33.	Dot Net Framework consists of :
A.	Common language runtime
B.	Set of class libraries
C.	Common language runtime and set of class libraries
D.	None of above
Answer» C. Common language runtime and set of class libraries

34.	Which of the following statements are correct about JIT? 1. JIT compiler compiles instructions into machine code at run time. 2. The code compiler by the JIT compiler runs under CLR. 3. The instructions compiled by JIT compilers are written in native code. 4. The instructions compiled by JIT compilers are written in Intermediate Language (IL) code.
A.	1,2,3
B.	2,4
C.	3,4
D.	1,2
Answer» A. 1,2,3

35.	Which of the following is the root of the .NET type hierarchy?
A.	System.Type
B.	System.Base
C.	System.Parent
D.	System.Object
Answer» D. System.Object