The "Do I Know This Already?" quizzes allow you to skip what you've mastered and focus on weak points.
While Volume 1 focuses on the "how" of moving data (the plumbing), Volume 2 tells the story of how to that data and scale networks using modern software-driven techniques. The Core Narrative: Beyond Basic Routing CCNA 200-301 VOLUME 2
The "plot" of Volume 2 progresses through several critical themes that define a modern networking career: The "Do I Know This Already
You learn to manage complex resources using NAT (to save IP addresses) and QoS (to prioritize critical traffic like voice or video). It then moves into high-level blueprints for Cloud , WAN , and LAN architectures . and LAN architectures .