In network communication using TCP/IP which layer needs the physical address and which layer needs the logical address? Discuss why we need the port addresses in network communication. A 256-byte message is sent through a private internet using the TCP/IP protocol suite which is a 5-layer model. If the protocol adds a 16-byte header at each layer (except the physical layer), what is the efficiency of [20] the system (the ratio original bytes to the total bytes)? Show how you arrived at your answer. In network communication using TCP/IP which layer needs the physical address and which layer needs the logical address? Discuss why we need the port addresses in network communication. A 256-byte message is sent through a private internet using the TCP/IP protocol suite which is a 5-layer model. If the protocol adds a 16-byte header at each layer (except the physical layer), what is the efficiency of [20] the system (the ratio original bytes to the total bytes)? Show how you arrived at your answer.