Peer-to-peer systems typically depend on untrusted and volatile computer systems for most of their resources. Trust is a social phenomenon with technical consequences. Volatility (i.e., unpredictable availability) also is often due to human actions. Elaborate your answers to Exercise 10.4 by discussing the possible ways in which each of them are likely to differ according to the following attributes of the computers used:

i) ownership;

ii) geographic location;

iii) network connectivity;

iv) country or jurisdiction.

What does this suggest about policies for the placement of data objects in a peer-to-peer storage service?