Cheat Sheet
| Question | Core Idea | Senior Signal |
|---|---|---|
| Q050-Q058 | React | Connect component patterns to render cost, state flow, and resilience. |
| Q059-Q061 | Next.js | Explain App Router, rendering trade-offs, hydration, and metadata. |
| Q062-Q063 | Auth | Separate identity, permissions, RBAC, and feature gates. |