C# Online Quiz

Q 1 - Which of the following is correct about variable naming conventions in C#?

A - A name must begin with a letter that could be followed by a sequence of letters, digits (0 - 9) or underscore.

B - The first character in an identifier cannot be a digit.

C - Both of the above.

D - None of the above.

Q 2 - Value type variables in C# are derived from the class System.ValueType?

A - true

B - false

Q 3 - Which of the following converts a type to a double type in C#?

A - ToDecimal

B - ToDouble

C - ToInt16

D - ToInt32

Q 4 - Which of the following converts a type to an unsigned int type in C#?

A - ToType

B - ToUInt16

C - ToSingle

D - ToString

Q 5 - Which of the following access specifier in C# allows a class to expose its member variables and member functions to other functions and objects in the current assembly?

A - Public

B - Private

C - Protected

D - Internal

Q 6 - Which of the following property of Array class in C# checks whether the Array is readonly?

A - IsFixedSize

B - IsReadOnly

C - Length

D - None of the above.

Q 7 - Which of the following is the correct about class constructor?

A - A class constructor is a special member function of a class that is executed whenever we create new objects of that class.

B - A constructor has exactly the same name as that of class and it does not have any return type.

C - Both of the above.

D - None of the above.

Q 8 - Dynamic polymorphism is implemented by abstract classes and virtual functions.

A - true

B - false

Q 9 - Which of the following preprocessor directive allows you to undefine a symbol in C#?

A - define

B - undef

C - region

D - endregion

Q 10 - Which of the following is true about catch block in C#?

A - A program catches an exception with an exception handler at the place in a program where you want to handle the problem.

B - The catch keyword indicates the catching of an exception.

C - Both of the above.

D - None of the above.