Category
Hands-on networking and homelab notes covering VLANs, DHCP, DNS, Packet Tracer, Proxmox, and support-focused lab practice.
Got a 169.254 address, no default gateway, or websites that will not resolve? Use these Windows checks to find whether DHCP, the gateway, or DNS is failing.
Use Port → VLAN → MAC → DHCP → Gateway to find the first failed check when a device has link but no network.
A practical beginner explanation of subnets, masks, and why subnetting matters in IT support learning.
A beginner-friendly explanation of VLANs and why they are useful in homelab and small network practice.
See every current Jensen IT Notes article across support, networking, tools, projects, and career learning.