Chapter 13 Encapsulation CHAPTER 13 ENCAPSULATION Step by Step Summary Form

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when a singers data travels down the stack of the layers each layer of the OSI model encapsulated data by adding a header and sometimes a chiller to data this packaging of data is called data encapsulation let's look at an example to demonstrate data encapsulation process uses data starts at application layer on the singing side as the data moves down to the presentation layer it is encoded or compressed to a standard format sometimes encrypted after the user data is a converted to a comma standard a format it a moves down to session layer added a session layer session ID is attached to the data at this point data is still one whole data block now the data is handed down to the transport layer keep in mind encapsulated the data is called by different names as it travels down through the following lower layers these names are called protocol data unit or PD you added the transport layer data is then broken up into different smaller blocks or pieces just imagine this data represents one