Question 121 – What is a Shallow Copy?

A shallow copy means the contents (each array element) contains references to the same object as the elements in the original array.

Question 122 – What is a Deep Copy?

A deep copy (which neither of these methods performs) would create a new instance of each element’s object, resulting in a different, yet identical object. Basically it copies the source objects as well. So that there will be two different copies of the sources and objects.

Question 123 – What are the different String Compare options available?

String Functions

Description

Question 124 – What is a Statics Class

• It is not possible to create instances of a static class using the new keyword.
• A class can be declared static, indicating that it contains only static members.
• If a class is declared as static then the variables and methods should compulsorily declared as static.
• Static classes are loaded automatically by the .NET Framework common language runtime (CLR) when the program or namespace containing the class is loaded.
• Static classes cannot contain a constructor, although it is still possible to declare a static constructor to assign initial values or set up some static state.

Question 125 – What are the advantages of using Static Class?

• The advantage of using a static class is that the compiler can check to make sure that no instance members are accidentally added.
• The compiler will guarantee that instances of this class cannot be created.

Question 126 – List some of the main features of a Static Class?

The main features of a static class are:

• They only contain static members.
• They cannot be instantiated.
• They are sealed.
• They cannot contain Instance Constructors

Question 127 – What is a Static Member?

• A static method, field, property, or event is callable on a class even when no instance of the class has been created.
• Static members are often used to represent data or calculations that do not change in response to object state; for instance, a math library might contain static methods for calculating sine and cosine.
• Static class members are declared using the STATIC keyword.
• Static members are preloaded in the memory.

Question 128 – What is a Static Variable?

• A static variable is a variable that will be the same in all instances of a class.
• The initial value of a static variable is the default value of the variable’s type.
• A field declared with the static modifier is called a static variable. A static variable comes into existence before execution of the static constructor.
• Normally each class as its own copy of all variables. If you declare some as static, then they will have the same value in each instance of a class.

Question 129 – What is a Static Method?

• Static methods show have static keyword as the method definition
• Static methods are accessed without creating an instance of the class object
• Static methods will not have “this” functionality to access the method
• Static methods cannot access non static members of the class.

Question 130 – What is a Nested Class?

• A nested class is one that is created inside another class.
• Nested classes have access to the private members of the outer class. So a scenario where this is the right way would be when creating a Comparer (ie. implementing the IComparer interface).
• Nested classes are very useful for implementing internal details that should not be exposed.

Disclaimer – F5debug Interview Questions & Answers Series:

You may recopy extracts from these pages (“the material”) to individual third party websites or to any intranet websites, but only if:

You acknowledge www.f5debug.net as the source of the material. Such acknowledgment should include reference to www.f5debug.net in the copy of the material and should also include “© Karthikeyan Anbarasan, www.f5debug.net “. You inform the third party that these conditions apply to him/her and that he/she must comply with them.