C# Objects (Teamtreehouse)

Question 1

What is Object Oriented Programming (OOP)?

Answer 1

Object-oriented programming (OOP) is a programming language model organized around objects rather than “actions” and data rather than logic.

Question 2

What is instantiation?

Answer 2

Creating an object or an instance of a class from class.

Question 3

What is a constructor?

Answer 3

Constructors enable the programmer to set default values of instance variables and create an instance of a class.

Question 4

What are static methods?

Answer 4

Static methods are called directly on a class, rather than an object.

Question 5

What are the core principles of OOP?

Answer 5

Encapsulation, Inheritance, Polymorphism, Abstraction.

Question 6

What is Inheritance?

Answer 6

Inheritance is the concept that when a class of objects is defined, any subclass that is defined can inherit the definitions of one or more general classes.

Question 7

What is encapsulation?

Answer 7

Encapsulation is an Object Oriented Programming concept that binds together the data and functions that manipulate the data, and that keeps both safe from outside interference and misuse.

Question 8

What does DRY stand for?

Answer 8

Don’t Repeat Yourself.

Question 9

What is code smell?

Answer 9

Code smell indicates that there is a potential problem with how the software is designed.

Question 10

What is polymorphism?

Answer 10

Polymorphism describes a pattern in which classes have different functionality while sharing a common interface.