Chapter 3. Fundamentals of WANs
This chapter covers the following exam topics:
1.1 Describe the purpose and functions of various network devices
1.1.a Interpret a network diagram
Cisco begins its Data Center certification track with the DCICN exam. This exam focuses on the data center to some extent, but it also provides a broad view of networking technologies. This chapter introduces a function in networking that typically sits outside the data center, connecting multiple sites together: the Wide Area Network (WAN).
Most Layer 1 and 2 networking technology falls into one of two primary categories: WANs and LANs. Because both WANs and LANs match OSI Layers 1 and 2, they have many similarities: Both define cabling details, transmission speeds, ...
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