Quiz: Local-First Architecture 4 questions · 80% to pass 1. The Equifax, OPM, and Change Healthcare breaches share a common root cause:Weak passwordsCentralized storage creating a single target that exposes all records when breachedEmployees clicking phishing emailsOutdated programming languagesAll three breaches exploited centralized databases. One attack, total exposure. Local-first architecture inverts this: breaching one device gets one record. The economics of attack no longer reward scale.2. In the compute pyramid, what percentage of daily AI operations require cloud infrastructure?About 50%About 25%About 1%About 10%95% of operations are cached behavioral scripts (negligible compute), 4% are pattern matching (local model), and only about 1% require full model inference that might benefit from cloud resources. Even that 1% is increasingly viable on-device.3. A zero-knowledge proof in the medical context allows you to:Share your complete medical records securelyProve a health metric meets a threshold without revealing the actual numberEncrypt your records so only your doctor can read themDelete your medical history from insurance company databasesZero-knowledge proofs verify that a condition is met (A1C below 7.0, vaccination status confirmed) without revealing the underlying data. The verifier learns the answer is yes or no. They never see the actual value.4. The statement 'privacy policies are promises, architecture is physics' means:Privacy policies are legally binding and sufficientOnly government regulation can protect privacyArchitectural design that prevents data access is more reliable than policy commitments not to access dataPhysics-based encryption cannot be brokenA privacy policy is a promise that can be broken, changed, or violated. Architecture that keeps data on your device and never transmits it cannot be violated by the service provider. The data is physically not available to breach. Check answers Retake quiz Back to lesson Next lesson →