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1.4 Peer-to-Peer Communication

The term peer-to-peer identifies two communicating entities, functioning or operating at the same layer of the stack, as peers. The peers are usually on different systems that are connected by one or more networks, as shown in Figure 1-1.

Figure 1-1Figure 1–1 Peer relationships

EXAM NOTES

Key Learning Points

  • The two ends of a communication are at the same layer of the stack.

  • The peer entities may be application processes or protocols.

The following section identifies protocols by the Requests for Comments (RFCs) that formally describe them.

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