What are the steps of data encapsulation?

Data encapsulation is the process of adding header and trailer information in the data. Whenever data is being passed from one layer to another, the layers add some extra information to the data. This is known as a header. The next layer processes the data and adds its own header. As the data further moves on through layers, the same process continues until the data is placed on the physical media. This entire process is called encapsulation. In contradiction to this, removing the trailer information and the header from the data is called data decapsulation.