Is the free tier actually free?

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.

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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.

QoS Basics: Making Sure the Important Traffic Wins | Reload in 5

Why all packets are not equal, and how classification, queuing, and policing keep voice and video usable.

Practice free · Network engineering tools