C# mcq questions with answer – Set 4

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#1. Which of the following is the correct way to create an object of the class Sample?

Select all that apply:

Sample s = new Sample();

Sample s = new Sample();

Sample s;

Sample s;

Sample s; s = new Sample();

Sample s; s = new Sample();

s = new Sample();

s = new Sample();

#2. Which of the following statements are correct?

Select all that apply:

Data members ofa class are by default public.

Data members ofa class are by default public.

Data members of a class are by default private.

Data members of a class are by default private.

Member function of a class are by default private.

Member function of a class are by default private.

A private function of a class can access a public function within the same class.

A private function of a class can access a public function within the same class.

#3. If s1 and s2 are references to two strings, then which of the following is the correct way to compare the two references?

s1 is s2

s1 is s2

s1 = s2

s1 = s2

s1.Equals(s2)

s1.Equals(s2)

strcmp(s1, s2)

strcmp(s1, s2)

#4. Which of the following statements is incorrect about delegate?

Delegates are reference types.

Delegates are reference types.

Delegates are object oriented.

Delegates are object oriented.

Only one method can be called using a delegate.

Only one method can be called using a delegate.

Delegates serve the same purpose as function pointers in C and pointers to member function operators in C++

Delegates serve the same purpose as function pointers in C and pointers to member function operators in C++

#5. Which of the following statements is incorrect about a delegate?

A single delegate can invoke more than one method.

A single delegate can invoke more than one method.

Delegates can be shared.

Delegates can be shared.

Delegate is a value type.

Delegate is a value type.

Delegates are type-safe wrappers for function pointers

Delegates are type-safe wrappers for function pointers

#6. With which of the following can the ref keyword be used?

Static data

Static data

Instance data

Instance data

Static function/subroutine

Static function/subroutine

Instance function/subroutine

Instance function/subroutine

#7. Which of the following statements are correct about Attributes in C#.NET?

On compiling a C#.NET program the attibutes applied are recorded in the metadata of the assembly.

On compiling a C#.NET program the attibutes applied are recorded in the metadata of the assembly.

On compilation all the attribute's tags are deleted from the program.

On compilation all the attribute's tags are deleted from the program.

An attribute can have parameters.

An attribute can have parameters.

The attributes applied can be read from an assembly using Reflection class.

The attributes applied can be read from an assembly using Reflection class.

#8. Which of the following is absolutely neccessary to use a class 'Point' present in namespace 'Graph' stored in library?

Use fully qualified name of the 'Point' class.

Use fully qualified name of the 'Point' class.

Use using statement before using the 'Point' class.

Use using statement before using the 'Point' class.

Add Reference of the library before using the 'Point' class.

Add Reference of the library before using the 'Point' class.

Use using statement before using the 'Point' class.

Use using statement before using the 'Point' class.

#9. Which of the following statements is correct?

The conditional logical operators cannot be overloaded.

The conditional logical operators cannot be overloaded.

When a binary operator is overloaded the corresponding assignment operator, if any, must be explicitly overloaded.

When a binary operator is overloaded the corresponding assignment operator, if any, must be explicitly overloaded.

We can use the default equality operator in an overloaded implementation of the equality operator.

We can use the default equality operator in an overloaded implementation of the equality operator.

A public or nested public reference type does not overload the equality operator.

A public or nested public reference type does not overload the equality operator.

#10. Which of the following are NOT true about .NET Framework?

Select all that apply:

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It provides a consistent object-oriented programming environment whether object code is stored and executed locally, executed locally but Internet-distributed, or executed remotely.

It provides a consistent object-oriented programming environment whether object code is stored and executed locally, executed locally but Internet-distributed, or executed remotely.

It provides a code-execution environment that minimizes software deployment and versioning conflicts.

It provides a code-execution environment that minimizes software deployment and versioning conflicts.

It provides an event driven programming model for building Windows Device Drivers.

It provides an event driven programming model for building Windows Device Drivers.

It provides different programming models for Windows-based applications and Web-based applications.

It provides different programming models for Windows-based applications and Web-based applications.

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