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Cisco Network Topologies and LAN Design

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.

Case Studies

The following case study questions are based on the ongoing scenarios that are presented in the "Case Studies" section of Chapter 1, "Design Goals." If you want to familiarize yourself with the entire scenario, refer to that section before working through the following questions. The answers to these questions can be found in the "Case Study Answers" section at the end of this chapter.

Case Study #1: GHY Resources

  1. What issues does GHY Resources have on its Ethernet segments that may cause packet loss on the network?

  2. Is the LAN in Kansas City running over the recommended maximum utilization?

  3. Draw the current LAN network at the headquarters in St. Louis.

  4. If each sales office has less than 20 nodes but may grow to over 30, what switch would you recommend to meet the current requirements?

  5. The headquarters segments have 30 users each and will not grow to over 48 nodes. Draw out the topology for a possible solution. Update the topology with Cisco products for this building LAN that uses switched ports and Fast Ethernet media.

Case Study #2: Pages Magazine, Inc.

  1. What type of media is used at Pages Magazine, Inc., locations?

  2. Ms. Phillips mentions that their Ethernet segments are running over 40 percent utilization during peak hours of the day. What would you suggest?

  3. Is the number of nodes at the remote sites too large?

5. Case Study Answers | Next Section Previous Section