1. What is the role of the forwarding table within a router? 2. We said that a network layer’s service model “defines the characteristics of end-to-end transport of packets between sending and...

1. What is the role of the forwarding table within a router?

2. We said that a network layer’s service model “defines the characteristics of end-to-end transport of packets between sending and receiving hosts.” What is the service model of the Internet’s network layer? What guarantees are made by the Internet’s service model regarding the host-to-host delivery of datagrams?