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DotNet using C# Skill Assessment

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DotNet using C# MCQ

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Focused questions for skill assessment

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Premium questions with correct answers

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Free Sample Questions for DotNet using C#

Which of the following is true about exceptions?

Exceptions should be derived from the System.Exception, but are not required to do so.

If no catch block is found for an exception, and the source is not a static constructor, a System.ThreadException will be thrown

Mathematical errors such as divide by zero, or numeric overflow will generate an exception that is derived from System.Exception

Every throw statement must have at least one catch block

Answer:
Mathematical errors such as divide by zero, or numeric overflow will generate an exception that is derived from System.Exception

Which of the following is not an unboxing conversion?

void Sample1(object o) { int i = (int)o; }

void Sample1(ValueType vt) { int i = (int)vt; }

enum E { Hello, World} void Sample1(System.Enum et) { E e = (E) et; }

interface I { int Value { get; set; } } void Sample1(I vt) { int i = vt.Value; }

class C { public int Value { get; set; } } void Sample1(C vt) { int i = vt.Value; }

Answer:
class C { public int Value { get; set; } } void Sample1(C vt) { int i = vt.Value; }

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