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Short lessons that explain one thing properly. Search for a word, or pick a subject and read it through from the basics.

1 of 58 lessons about Hardware, intermediate level Show all lessons

Networks and business IT

The equipment in the comms cupboard and what it does: addresses, routers, firewalls, VLANs and VPNs.

1 of 6 lessons shown

Router vs switch vs access point: what’s the difference? A router joins your office to the internet, a switch connects wired devices, and an access point provides Wi-Fi. How to tell which one you need. Intermediate 3 min read

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