1- What's the difference between overloading and overriding ? 2- What OOP principale is that ? 3- What's the adventage of a monolitich app vs microservices ? 4- What's DDD ? give an example ? what are the advantages ? 5 - What are the boundries of DDD ? 6- What is the advantage of monolithic over micro-services ? Then a little session of code: 7- Code a function that will return a factorial of a number 8- Code the same function without multiplication.