Appendix A. Answers to the Review Questions
Chapter 1
1. B and C. The Cisco Enterprise Architecture is a hierarchical design. The network is divided into three functional layers: core, distribution, and access. In smaller networks, this three-layer division of functional layers is collapsed into two layers, with the core and distribution layers combined to form a collapsed core.
2. D. Routers or multilayer switches are usually deployed in pairs, with access layer switches evenly divided between them. This configuration is referred to as a building switch block or a departmental switch block. Each switch block acts independently of the others. As a result, the failure of a single device does not cause the network to go down. Even the failure ...
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