Introduction

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Routing and switching concepts are the foundation upon which a solid network infrastructure is built. As networks increase in size and complexity, it becomes increasingly important to be able to apply conceptual knowledge effectively in a production environment as well as to understand how router configuration steps impact a network. It has been our experience that networking concepts often are learned independent of each other. Generally, this is intended to provide a focused learning approach. However, this often leaves gaps in how networking theory is applied in real-world scenarios. Real-world networks are seldom composed of a single WAN technology, routing protocol, or network topology. For this reason, a network engineer must have practical knowledge in applying networking concepts. CCNA Practical Studies is intended to help you move concepts and theories into practical experience on Cisco routers.

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