Process of data encapsulation as data

Describe the process of data encapsulation as data is processed from creation until it exits a physical interface to a network. Use the OSI model as an example.
What OSI layer typically encapsulates using both a header and a trailer? Use an example to explain your answer.
Describe the process of data encapsulation as data is processed from creation until it exits a physical interface to a network. Use the OSI model as an example. Now, for the original part of the discussion, discuss what you think may be redundant in this process, or on the other hand, what may be missing from this process. This process has been around a long time…is it as efficient as it needs to be? Has technology done some of this so we can modify how data is sent?
Discuss what you think is the Role of TCP/IP in data transmission from source to destination. It is a fairly large suite of protocols, so pick two or three protocols of the TCP/IP suite. Then, discuss how they handle their part of the transmission of data.