Network Foundations
What this unit covers
The topics below follow the published Networking course framework for Unit 1. Networking publishes no per-unit weighting, so there is no percentage to chase here.
Lessons in this unit
- Network Models and Encapsulation18 min · 3 objectivesExplain layered network communication · Apply the idea to evidence from a realistic technology scenario · Justify a decision using security, reliability, cost, and user impact
- Addresses, Subnets, and Default Gateways18 min · 3 objectivesExplain IPv4 addressing and subnet boundaries · Apply the idea to evidence from a realistic technology scenario · Justify a decision using security, reliability, cost, and user impact
- Ethernet, Wi-Fi, and Performance18 min · 3 objectivesExplain local media, switching, and performance measures · 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 **layered network communication**, identify the decisive evidence before naming a response. A defensible conclusion here is: The application data remains conceptually the same while lower-layer framing changes from link to link.
- For a scenario about **IPv4 addressing and subnet boundaries**, identify the decisive evidence before naming a response. A defensible conclusion here is: A router must move the packet between the two /24 networks.
- For a scenario about **local media, switching, and performance measures**, identify the decisive evidence before naming a response. A defensible conclusion here is: The evidence points to wireless quality, not insufficient advertised internet bandwidth.
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 1?
The Networking course framework does not publish a per-unit weighting, so there is no percentage to quote for Unit 1 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 1?
Network Foundations covers Network models, Devices, Addressing and Traffic flow.
How should I study Networking Unit 1?
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.