Network+™ Fast Pass

2.3. Identifying the OSI Layers at Which Various Components Operate

Some of your most important responsibilities as a network designer and administrator are to control traffic, keep communication speeds to a maximum, and maintain as much available bandwidth as possible. In order to accomplish these tasks, you must understand the differences in the devices that you can use to construct a network and connect devices. The capabilities of various network devices are dependent in large part on the layer of the OSI model at which they operate. Typically the higher a device can operate in the OSI model, the more intelligence and filtering capabilities it has for the network.

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For more information on where various components operate on the OSI model, ...