1) What are some of the possible services that a link-layer protocol can offer to the network layer? Which of these link-layer services have corresponding services in IP? In TCP? 2) Describe polling and token-passing protocols using the analogy of cocktail party interactions

1) What are some of the possible services that a link-layer protocol can offer to the network layer? Which of these link-layer services have corresponding services in IP? In TCP?

2) Describe polling and token-passing protocols using the analogy of cocktail party interactions.

3) What is ARP and what does it do?

4) Why is an ARP query sent within a broadcast frame? Why is an ARP response sent within a frame with a specific destination MAC address?

5) Compare CSMA/CD to CSMA/CA for wireless networks.

6) Name at least 3 differences between a physical address and an IP address?