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

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Ethernet Cabling

A discussion about Ethernet cabling is an important one, especially if you are planning on taking the Cisco exams. You need to really understand the following three types of cables:

  • Straight-through cable
  • Crossover cable
  • Rolled cable

We will look at each in the following sections.

Straight-Through Cable

The straight-through cable is used to connect the following devices:

  • Host to switch or hub
  • Router to switch or hub

Four wires are used in straight-through cable to connect Ethernet devices. It is relatively simple to create this type; Figure 2-5 shows the four wires used in a straight-through Ethernet cable.

Figure 2-5: Straight-through Ethernet cable

Notice that only pins 1, 2, 3, and 6 are used. Just connect 1 to 1, 2 ...

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