[Network] Multiplexing, Demultiplexing summary

□ Multiplexing

○ It is method to make "one data" that makes up into many data pieces
○ This "one data" can be separated, respectively
○ (In OSI Model) Multiple protocol data of the upper layer are converted into a single protocol data of the lower layer
○ (In OSI Model) In order to distinguish the single protocol data contents, it uses the higher layer protocol identifier

□ Demultiplexing

○ The "one data" is divided again into several data
○ (In OSI Model) The one protocol data in the lower layer is converted into a multiple protocol data in the higher layer
○ (In OSI Model) In order to distinguish the single protocol data contents, it uses the higher layer protocol identifier