Top 150+ Solved C# Programming MCQ Questions Answer

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

a. GAC

b. CLS

c. CTS

d. CLR

  • b. CLS
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Q. ___________ namespace is not defined in the .NET class library.

a. System.CodeDom

b. System

c. System.IO

d. System.Text

  • a. System.CodeDom
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Q. 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

  • c. Common language runtime and set of class libraries
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Q. 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

  • a. 1,2,3
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Q. Which of the following is the root of the .NET type hierarchy?

a. System.Type

b. System.Base

c. System.Parent

d. System.Object

  • d. System.Object
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Q. Code that targets the Common Language Runtime is known as

a. Unmanaged

b. Distributed

c. Managed Code

d. Native Code

  • c. Managed Code
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Q. 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.

  • a. It is an environment for developing, building, deploying and executing Desktop Applications, Web Applications and Web Services.
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Q. How many types of compilers availbale under CLR?

a. 4

b. 2

c. 1

d. 3

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

a. gacutil

b. ngen

c. sn

d. ildasm

  • b. ngen
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Q. Which of the following statements are correct about data types? 1. If the integer literal exceeds the range of byte, a compilation error will occur. 2. We cannot implicitly convert non-literal numeric types of larger storage size to byte. 3. Byte cannot be implicitly converted to float. 4. A char can be implicitly converted to only int data type. 5. We can cast the integral character codes.

a. 1,3,5

b. 2,4

c. 3,5

d. 1,2,5

  • d. 1,2,5
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Q. Which of the following is NOT an Integer?

a. Char

b. Byte

c. Integer

d. Long

  • a. Char
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Q. 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));

a. 0.1

b. 1.0

c. 1.1

d. 11

  • a. 0.1
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Q. Which of the following is the correct size of a Decimal datatype?

a. 8 bytes

b. 4 bytes

c. 10 bytes

d. None of the above

  • d. None of the above
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Q. Which of the following statements are correct? 1. We can assign values of any type to variables of type object. 2. When a variable of a value type is converted to object, it is said to be unboxed. 3. When a variable of type object is converted to a value type, it is said to be boxed. 4. Boolean variable cannot have a value of null. 5. When a value type is boxed, an entirely new object must be allocated and constructed.

a. 2,5

b. 1,5

c. 3,4

d. 2,3

  • b. 1,5
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Q. Which of the following is the correct ways to set a value 3.14 in a variable pi such that it cannot be modified?

a. float pi = 3.14F;

b. #define pi 3.14F;

c. const float pi = 3.14F;

d. const float pi; pi = 3.14F;

  • c. const float pi = 3.14F;
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