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Routing and Switching Essentials Companion Guide by Cisco Networking Academy

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Appendix A. Answers to the “Check Your Understanding” Questions

Chapter 1

1. B and C. Explanation: The access layer is concerned with end device connectivity. Switches and access points provide connectivity for wired and wireless devices. Distribution layer aggregates connections from access layer switches. This layer can also define Layer 3 routing boundaries and policy-based network connectivity. The core layer is known as the high speed backbone.

2. C. Explanation: The hierarchical goal specifies a specific role for each device in the network design. Modularity allows the network to expand in a planned fashion. Flexibility ensures that network resources are available to provide traffic load sharing.

3. D and F. Explanation: The three layers ...

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