Question Set 1 for Crowcroft's DTN/Social/Mobile Networking Summer
School course@Lipari, July 2010

1. Why do DTNs and Social Networks not connect people via a
TCP/IP protocol suite?

2. What is Dunbar's number, and why is it important in social
networks?

3. Forwarding in DTNs makes use of the notion of "Custodians". What is
their role?

4. DTNs use "bundles" rather than "packets" - explain, the difference
and reasons for it.

5. Opportunistic networks rely on unplanned meetings. What
requirements does this place on forwarding which may not be present in
classical (e.g. Interplanetary) DTNs?

6. What are the problems for authentication and privacy that arise in
a network without infrastructure?
