Networking
Router vs Switch vs Access Point: What Each Box Actually Does
Routers move traffic between networks, switches connect wired devices on a network, and access points provide Wi-Fi access to that network.
Public IP vs Private IP: What Your Router Is Hiding
Public IP addresses are reachable on the internet. Private IP addresses are reused inside local networks and usually sit behind NAT.
PoE vs PoE+ vs PoE++: Why Cameras and APs Reboot
Power over Ethernet sends power and data over one cable. The standard, switch budget, cable quality, and device draw all matter.
Patch Panel vs Switch: What Belongs in the Rack
A patch panel terminates and organizes cables. A switch forwards network traffic. They work together but do completely different jobs.
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.