Network Infrastructure
What this unit covers
The topics below follow the published Networking course framework for Unit 2. Networking publishes no per-unit weighting, so there is no percentage to chase here.
Lessons in this unit
- Switching and VLANs18 min · 3 objectivesExplain Layer 2 forwarding and logical segmentation · Apply the idea to evidence from a realistic technology scenario · Justify a decision using security, reliability, cost, and user impact
- Routing and Path Selection18 min · 3 objectivesExplain routing tables, next hops, and path decisions · Apply the idea to evidence from a realistic technology scenario · Justify a decision using security, reliability, cost, and user impact
- Wireless Infrastructure and Coverage18 min · 3 objectivesExplain wireless design, channels, roaming, and capacity · Apply the idea to evidence from a realistic technology scenario · Justify a decision using security, reliability, cost, and user impact
What examiners penalize here
- For a scenario about **Layer 2 forwarding and logical segmentation**, identify the decisive evidence before naming a response. A defensible conclusion here is: VLANs provide segmentation, but policy at the routed boundary determines what communication is allowed.
- For a scenario about **routing tables, next hops, and path decisions**, identify the decisive evidence before naming a response. A defensible conclusion here is: The router forward through gateway B using the /24 route.
- For a scenario about **wireless design, channels, roaming, and capacity**, identify the decisive evidence before naming a response. A defensible conclusion here is: Treat this as a capacity and airtime problem, then validate the redesign under realistic load.
Practice Networking
Our practice bank is drawn from across the whole course rather than filtered to one unit, which is closer to how the exam asks anyway — it will not tell you which unit a question is testing.
Questions about this unit
How much of the AP Networking exam is Unit 2?
The Networking course framework does not publish a per-unit weighting, so there is no percentage to quote for Unit 2 and anyone who gives you one is guessing. Spread your time by where your own errors are instead.
What topics are covered in Networking Unit 2?
Network Infrastructure covers Switching, Routing, Wireless and Cloud and edge.
How should I study Networking Unit 2?
Read the 3 lessons below first — about 55 minutes — then work practice questions on these topics. Finish with practice questions and read the explanation for every one you get right by elimination as well as the ones you miss.
All 5 units of AP Networking
Unit names, topics and exam weights follow the published College Board course framework for AP Networking. AP® is a trademark registered by the College Board, which does not endorse this site.