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CCNA® Cisco Certified Network Associate: Study Guide, Seventh Edition by Todd Lammle

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Ethernet Networks in Review

Ethernet is a contention-based media access method that allows all hosts on a network to share the same bandwidth of a link. Ethernet is popular because it’s readily scalable, meaning that it’s comparatively easy to integrate new technologies, such as upgrading from Fast Ethernet to Gigabit Ethernet, into an existing network infrastructure. It’s also relatively simple to implement in the first place, and with it, troubleshooting is reasonably straightforward. Ethernet uses both Data Link and Physical layer specifications, and this chapter will give you both the Data Link layer and Physical layer information you need to effectively implement, troubleshoot, and maintain an Ethernet network.

Collision Domain

As mentioned ...

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