4. (20 points) Using the configuration of last question, now assume packets pass two routers to reach destination. The picture below contains your private network, the servers, and the routers in between. Nodel sends a message to Google server. (Pay attention: who is the source, who is the destination?). A frame is created at node1 to send the packet to the router. Then the frame is processed and updated in each router to forward the packet to
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