Networking
Ping vs Tracert/Traceroute: Reachability vs Path Troubleshooting
Ping checks reachability and latency. Traceroute shows the path packets take. Both can mislead if ICMP is filtered or deprioritized.
NAT vs Routing: What Happens When Traffic Leaves Your LAN
Routing decides where packets go. NAT rewrites addresses. Home networks usually use both, but they are not the same job.
Modem vs Router vs Gateway Explained
A modem or ONT connects to the provider network, a router connects your home network to it, and a gateway combines multiple jobs in one box.
Guest Wi-Fi vs IoT VLAN: Isolation Without Breaking Everything
Guest Wi-Fi is simple isolation for visitors. IoT VLANs are deliberate segmentation for devices you own but do not fully trust.
Fiber Optic Cables Explained: Structure, Distance, and Use Cases
Fiber carries data as light through glass or plastic strands. It is fast, distance-friendly, immune to EMI, and unforgiving of dirty connectors and sharp bends.
LC vs SC vs ST vs FC vs MPO/MTP: Fiber Connectors Explained
Fiber connectors must match the optic, patch panel, polish type, density requirement, and fiber mode. The shape alone is not enough.
DHCP vs DNS: What Breaks When Each One Fails
DHCP gives devices network settings. DNS turns names into addresses. Knowing the difference fixes a huge number of home and office network problems.
Cat5e vs Cat6 vs Cat6A: What To Buy and What To Avoid
Cat5e is often enough for 1GbE and 2.5GbE. Cat6 is a practical home default. Cat6A is the safer 10GbE long-run choice.
Access Port vs Trunk Port: VLAN Ports Explained
Access ports carry one normal endpoint VLAN. Trunk ports carry multiple tagged VLANs between switches, routers, firewalls, and access points.
Orange Pi 6 vs Raspberry Pi 5 for Homelab: Powerful Hardware, Real Tradeoffs
Orange Pi 6 brings dual 2.5GbE, dual NVMe, LPDDR5, and serious AI claims to a tiny board, but software support and total cost decide whether it belongs in your homelab.