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3. Network Access (20%)

Building on Phase 2's switching concepts, this domain focuses on segmenting networks with VLANs, connecting switches with trunks, preventing loops with Spanning Tree, and deploying wireless networks. Recall from Phase 1 that switches forward based on MAC addresses within a broadcast domain—VLANs create multiple broadcast domains on a single switch.

Alvin Varughese
Written byAlvin Varughese
Founder•20 professional certifications