Your question is Networking Deep Dive Topics. Take a moment with it on the right.
Talk me through your thinking if you like. When you're confident, submit your answer and I'll grade it like a real screen (7/10 or better passes).
Explain ARP, packet flow, traceroute, ICMP, VLANs, routing, OSPF, and BGP, and how you would use them in troubleshooting.