CCNA Discovery 1, Chapter 6

6.1.1: As defined on Day 31, a host running a server application provides information and services to other hosts running client applications. The communication between a server and client requires a set of standards and protocols.

6.3.1: When hosts communicate over a network, they implement many protocols. This protocol stack is made up of layers, each of which relies on its neighboring layers. The lower-layer protocols focus on moving the data across the network, and the higher-layer protocols focus on the format of the data in the transmission. When you use a layered model to learn network protocols, you can single out the operation of a single layer and how it interacts with other layers. The following list explains ...

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