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Cisco Network Topologies and LAN Design

Sample Chapter is provided courtesy of Cisco Press.
Date: Nov 16, 2001.

Chapter Information

Chapter Description

This chapter from CCDA Exam Certification Guide reviews the topologies used in network design and covers the technologies and design approaches used when designing a local-area network (LAN). The hierarchical, redundant, and secure topology models are covered. Technologies like Ethernet, Fast Ethernet, FDDI, and Token Ring are also covered in this chapter. This chapter also discusses the characteristics of repeaters, bridges, switches, and routers, as well as how to apply these devices in a LAN environment. Finally, this chapter covers the Cisco products used in local-area networks.

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Q&A

The following questions are designed to test your understanding of the topics covered in this chapter. When you have answered the questions, you can find the answers in Appendix A, "Answers to Quiz Questions." After you identify the subject matter you missed, review those sections in the chapter until you feel comfortable with this material.

1. What is the maximum segment size in 10BaseT?

2. What is the maximum segment size in 10Base2?

3. What is the maximum segment size in 10Base5?

4. What is the maximum segment size in 100BaseT?

5. What is the maximum segment size in 1000BaseT?

6. What does the acronym DIX stands for?

7. What are the three layers of hierarchical design?

8. At what percent utilization are Ethernets over-utilized?

9. At what percent utilization are Token Ring networks over-utilized?

10. At what percent utilization are FDDI networks over-utilized?

11. What is the maximum recommended percentage of broadcasts on the network?

12. What is the standard(s) for Gigabit Ethernet?

13. What standard governs Token Ring?

14. What media implements a dual-ring and forwards tokens?

15. Routers operate on which layer of the OSI model?

16. Switches operate on which layer of the OSI model?

17. Repeaters operate on which layer of the OSI model?

18. Bridges operate on which layer of the OSI model?

19. Transceivers operate on which layer of the OSI model?

20. Are bridges protocol transparent?

21. When switches implement cut-through switching mode, what is not verified to check for frame errors?

22. True or False: A repeater keeps a table of each MAC address on its ports and forwards frames accordingly.

23. True or False: Routers forward frames based on the destination MAC address.

24. True or False: Bridges forward frames based on the source MAC address.

25. What LAN media uses dual counter rotating rings?

26. Which Cisco device provides 48 ports of 10/100 Ethernet with 2 Gb uplinks?

27. What are the components of the three-part firewall system?

28. What is the encoding scheme of 10-Mbps Ethernet?

29. What is the encoding scheme of Token Ring?

30. 100BaseT forwards frames at what speed?

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