A wide area network is using the permit system to control congestion.
What happens if, for some unknown reason, all the permit disappear?
How can this event be detrcted? How can this problem be repair?


2. A large wide area network covers the united states and has multiple
nodes in every state. The node in denver crashes completely. How do
the oter nodes in the country learn of the crash.

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Request for Question Clarification by haversian-ga on 09 Dec 2002 20:17 PST

1.  Could you explain what "the permit system" is?

2.  The nodes can simply ping each other every few seconds and guess
if they don't get 5 in a row back, the node's crashed - are you
looking for something more complicated than that?