Network Basics: Follow a Packet and Diagnose a Connection
Revision: 2026-10-18
https://nwkings.com/network-basics

[ ] Explain the difference between local networking, Wi-Fi and internet access.
[ ] Record the client address, prefix, gateway and DNS server.
[ ] Decide whether a destination is local or requires a router.
[ ] Explain why the next-hop MAC differs from the remote server address.
[ ] Follow DNS, routing, filtering and service response as separate checks.
[ ] Record a working baseline before introducing one lab fault.
[ ] Restore the setting and repeat the same test.
[ ] Write the symptom, evidence, cause, change and verified result.