For each network reference model layer, the software handles packages of data, which are called packet defined units.

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Quizplus · Accepted Answer

In network reference models, each layer handles units of data specific to that layer, but they are not all called "packet defined units." For example, in the OSI model, data units are called PDUs (Protocol Data Units), which have specific names at different layers, such as frames at the Data Link layer and packets at the Network layer.

For Each Network Reference Model Layer, the Software Handles Packages