- Considerthe transportation analogy in Section 6.1.1. If the passenger isanalogous to a datagram, what is analogous to the link layerframe?
- What aresome of the possible services that a link-layer protocol can offerto the network layer? Which of these link-layer services havecorresponding services in IP? In TCP?
- Describepolling and token-passing protocols using the analogy of cocktailparty interactions.
- What isARP and what does it do?
- Why is anARP query sent within a broadcast frame? Why is an ARP responsesent within a frame with a specific destination MACaddress?
- Consider Figure 6.15. How many sub-networks are there, in theaddressing
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