Labels:text | screenshot | diagram | line | font | parallel OCR: INTERNET PROTOCOL OPERATION LAN 1 Switched: WAN Router Hub/router End system (X) (Y) End system (A) (B) TCP TCP IP IF IP LLC LLO WAN WAN LLC LLC inter- MAC inter MAG Tace face MAC MAC Physical Physical Physical Physical Physical Physical Figure 2. Routers X and Y use the Internet Protocol (IP) to connect the two networks across a central WAN.