🧠 Section A · Concept Check ● BEGINNER 4 × 1 = 4
🧮 Section B · Problem Solving ● INTERMEDIATE 2 + 3×3 = 11
5ipconfig shows a host's IP, mask and .
6Bottom-up troubleshooting starts at the layer.
🚀 Section C · Challenge ● CHALLENGE 5
✂ answer key — fold or cut before handing out
1-A 2-A 3-A 4-A | 5 gateway 6 physical 7 = Local IP/gateway (ipconfig), ping gateway, ping 8.8.8.8 then DNS name 8 = DNS problem 9 = Identify, theorize, test, plan+implement, verify, document | 10 = Throughput, ports, security features, growth headroom