C# Class MCQs

Question 1: Which of the following is the default access modifier in a namespace?

• Public
• Private
• Internal
• Protected

Question 2: Which of the following is the default access modifier of the class members?

• Public
• Private
• Internal
• Protected internal

Question 3: Which of the following keyword is used to reference two assemblies with the same fully qualified type names?

• using
• alias
• extern alias
• extern

Question 4: What is missing in the below class definition in order to successfully compile?

public Person
{
	public string Name{ get; set; }
}

• Constructor
• Class keyword
• Method
• Nothing is missing

Question 5: Which is the auto-implemented property in the below code snippet?

public class Person
{
	int Id = 0;
	public string Name{ get; set; }
      
	private int _age;
    
    public int Age
    {
        get { return _age; }
        set { _age = value; }
    }
}

• Id
• Name
• Age
• All of the above

Question 6: Will the following code compile?

public class @class{

}

• Yes
• No

Question 7: A constructor can have a return type.

• True
• False

Question 8: A constructor can have a different name than a class name.

• True
• False

Question 9: A constructor can be public, private, or protected.

• True
• False

Question 10: Which of the following statements is TRUE about constructors?

• If a class does not include a constructor definition, then the compiler automatically provides a parameterless constructor.
• If the class includes a one-argument constructor, then the compiler still provides a zero-argument constructor.
• The name of the constructor should be the same as the class name with case-insensitive.
• A class can have a maximum of 10 constructors.