Question

(2pts) Provide a benefit why encapsulation is useful in building frames?

Answer 1

The term “encapsulation” is employed to explain a method of adding headers and trailers around some knowledge. for instance, after you send associate email victimization your favorite email program (like Outlook or Thunderbird) that email is distributed from the applying layer to the Transport layer. The Transport layer encapsulates the {information} and adds its own header (with its own information, like that port are going to be used) and passes the information to the net layer, that once more encapsulates the received knowledge and adds its own header, sometimes with info regarding the supply and destination information processing addresses. the net layer than passes the information to the Network Access layer. This layer is that the solely layer that adds each a header and a trailer. the information is then sent through a physical network link.

The term “decapsulation” refers to the method of removing headers and trailers as knowledge passes from lower to higher layers. This method happens on a laptop that's receiving knowledge

Frame – the term “frame” refers to the encapsulated knowledge outlined by the Network Access layer. A frame will have a header and a trailer that encapsulate an information section.

Packet – the term “packet” is employed to explain the encapsulated knowledge outlined by the net layer. A packet will have a header with the supply and destination information processing addresses.

section – the term “segment” describes encapsulated knowledge outlined by the Transport layer. A section will have a header with informations like supply and destionation port numbers, sequence and acknowledgment numbers, etc