 So this was a nice way of knowing that the network works in a layered structure and each layer takes care of its own function and also provides the functionality to the next layer. Yeah and broadly we have seen how a packet travels through all these layers to reach the destination doing hop by hop communication. Now the logical question would be how do these packets know where to go? This brings us to the question of concept of IP addressing. So the concept of IP addressing actually is a fairly detailed concept and since in this course we are dealing with it at a abstract level, let us start with looking at this story called Anupam's Adventure. So you can go and now read this story which gives you the idea of how IP addressing works and then come back.