Network+ performance-based questions: what they are and how to practise them

Network+ PBQs typically involve configuration and diagnosis: placing devices in a topology, matching ports and protocols, or ordering the steps to isolate a fault. They reward candidates who have actually looked at a network rather than only read about one. The recurring theme is whether you can reason about a topology you have not seen before. Knowing that a default gateway exists is recall; working out that traffic fails because the gateway sits in a different subnet is what the PBQs are for.

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