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Networking First-Step: How to Build a Local (Network) Roadway

  • Sample Chapter is provided courtesy of Cisco Press.
  • Date: Jun 4, 2004.

Contents

  1. Driving Bits Across the Network Roadway
  2. Sharing the Local Roadway: Ethernet Hubs
  3. Dirt Roads Versus the DOT
  4. Chapter Summary
  5. Chapter Review Questions

Chapter Description

Wendell Odom covers networking basics such as how they work, what they're made of, and the benefits of using a structured cabling system.

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Chapter Review Questions

You can find the answers to the following questions in Appendix A, "Answers to Chapter Review Questions."

  1. Give an example of how a computer might transmit binary 0s and 1s using variations in voltage on a wire.

  2. Imagine that two computers are sending and receiving data over a wire. How often would the receiving device need to sample the electrical signal on the wire if the standard called for 20 bps transmission speed?

  3. As explained in the chapter, do computers usually transmit data over the same wires they use to receive data? Why or why not?

  4. As explained in the chapter, do computers usually transmit data over a single wire, or do they use two wires?

  5. How many wires can fit inside the end of an RJ-45 connector?

  6. How many wires are needed for a PC to successfully send and receive data to another PC using an Ethernet LAN cable with RJ-45 connectors?

  7. Explain why a straight-through LAN cable does not work when connecting two PCs directly, just using the cable.

  8. Explain why a cross-over LAN cable does work when connecting two PCs directly, just using the cable.

  9. Explain why a straight-through LAN cable works when connecting a PC to a hub.

  10. What is the main difference between UTP and STP cabling? Which is more popular today?

  11. List some of the key benefits of a structured cabling plan.

  12. Imagine a hub with ten physical ports, and cables connecting each port to ten different PCs. The hub receives an electrical signal from the PC on port 1. Where does the hub forward the electrical signal?

  13. Define the term "pin" in relation to an RJ-45 connector.

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