Computer Networking: A Top-Down Approach (7th Edition)
7th Edition
ISBN: 9780133594140
Author: James Kurose, Keith Ross
Publisher: PEARSON
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Transcribed Image Text:Q2.4
Many distributed algorithms require one process to act as coordinator, at least initially. If a
process detects that the original coordinator is no longer responding to requests, it initiates a
new election. Consider a group
of 6 nodes labelled 0..5. Initially node 5 is the coordinator but it crashes. Node 2 is the first
node to notice that the coordinator has crashed. Describe the election using:
(1) the bully algorithm;
(ii) the ring algorithm where the nodes are arranged in a logical ring and only communicate with
their upstream neighbours.
Your answer should define the types of messages exchanged between nodes. It should also
clearly indicate all messages exchanged between nodes in the election process
node is elected as the new coordinator.
which
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