If you are wondering what media and topologies refer to, it all starts in the wiring closet. Media is the cabling, and topologies are the shapes that cabling and data transmissions take. Twenty percent (one-fifth) of the exam will contain questions that test your understanding of the following concepts of media and topologies.
So in this section we would presents the information needed to understand the common media used and the different types of topologies used on a network. This section covers the common media standards and the popular network components such as hubs, switches, bridges, routers, and gateways.
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