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Yes. The Edge tier is free forever -- no credit card, no trial clock. You only pay if you choose to upgrade to Backbone.

There is none. Subscriptions cover hosting, the AI tools, and email. No ads, no selling your data, no VC growth treadmill.

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A working network engineer -- not a faceless startup. New questions, labs, and tools ship every week.

Do I need an account to try it?

No. Try a few practice questions or a Route Zero run first. Sign up for a free account when you want to save streaks, rank, and progress.

DHCP and the DORA Handshake, Step by Step | Reload in 5

How a device with no IP address manages to ask for one -- and the four messages that hand it a lease.

Practice free · Network engineering tools