---------------------------- | network applications | | | |... \ | / .. \ | / ...| | ----- ----- | | |TCP| |UDP| | | ----- ----- | | \ / | | -------- | | | IP | | | ----- -*------ | | |ARP| | | | ----- | | | \ | | | ------ | | |ENET| | | ---@-- | ----------|----------------- | ------------o--------- Ethernet Cable