End Devices

The network devices that people are most familiar with are called end devices. Some examples of end devices are shown in Figure 1.
An end device is either the source or destination of a message transmitted over the network, as shown in the animation in Figure 2. To distinguish one end device from another, each end device on a network is identified by an address. When an end device initiates communication, it uses the address of the destination end device to specify where the message should be sent.

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