Q1. Referring to the figure below, explain how to separate the higher layer protocols and the lower layer protocols.

Q2. How the transport layer and network layer complements each other to provide data transmission between a service provider and the clients? 

application transport network data link physical Host 1 network dl di dl ph|ph|p1| network dl di dl ph|ph|ph. network dl di dl ph|ph|pl Figure 1 TCP/IP layered structure for data transmission application tra sport net vork data link physical Host 2