IT Certification Blog & Resources
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A VLAN splits one physical switch into separate networks. Learn VLAN types, 802.1Q tagging, native VLAN and the Cisco commands, with a lab you can boot.
EVE-NG won't boot or nodes stay red? Learn how to disable Hyper-V, fix VT-x errors, and repair image permissions with exact commands. Windows 11 24H2 tested.
Four Cisco ASA models lose all support on 2026-08-31. Which ones, what replaces them, and what to do if you can't migrate before the date.
Build a network engineer home lab in one weekend. Real 2026 hardware costs, emulator node limits, three starter topologies, and what you can safely skip.
A home lab is your own IT sandbox for hands-on practice. What it is, what it really costs in 2026, and how to build one that matches your cert exam.
CML Free runs 5 nodes. Personal is $199 for 20, Personal Plus $349 for 40, and neither expands. Every price and limit, verified against Cisco's own docs.
