C# (C Sharp) MCQs with answers Page - 5

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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

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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

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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

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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

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Q. How many types of compilers available under CLR?

  • (A) 4
  • (B) 2
  • (C) 1
  • (D) 3

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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

A

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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

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Q. Which of the following is NOT an Integer?

  • (A) Char
  • (B) Byte
  • (C) Integer
  • (D) Long

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Q. What will be the output of the following code snippet when it is
executed?

Code: 
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

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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

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