▸case-12 We need to deliver immediate JavaScript patch updates to our production React Native app without submitting a full binary build through the App Store review process. What service mechanism enables over-the-air updates? | fail→fail | — | — | — | — | — | — | — | — | — | — | — | — |
▸case-14 Our mobile app renders 5,000 feed items in a single non-virtualized scroll container, causing severe memory spikes. Developers suggest increasing heap size limits. What UI architecture pattern should be used for large datasets? | fail→fail | — | — | — | — | — | — | — | — | — | — | — | — |
▸case-20 We are optimizing a PostgreSQL database running on AWS RDS for a web backend. High write queries on heavily indexed tables are causing IOPS bottlenecks. Please suggest database index strategies and vacuum configuration options to resolve this backend issue. | fail→fail | — | — | — | — | — | — | — | — | — | — | — | — |
▸case-21 Our desktop web application needs CSS flexbox and grid styling to support widescreen monitors above 2560px resolution. Please provide a pure CSS media query layout for desktop web browsers. | fail→fail | — | — | — | — | — | — | — | — | — | — | — | — |
▸case-22 We are configuring Kubernetes infrastructure on AWS using Terraform to host microservice APIs. Provide a Terraform module configuration for an EKS cluster and node group management. | fail→fail | — | — | — | — | — | — | — | — | — | — | — | — |
▸case-19 A company wants to add cross-platform mobile features inside an existing large native iOS and Android application. Engineers suggest rewriting the entire application from scratch in Flutter. What strategy allows embedding cross-platform views into existing native apps? | fail→fail | — | — | — | — | — | — | — | — | — | — | — | — |
▸case-08 We are configuring JavaScript execution for a React Native app targeting low-end Android devices and iOS. Some team members suggest using JavaScriptCore without ahead-of-time compilation. What default engine should be configured for optimized startup? | fail→fail | — | — | — | — | — | — | — | — | — | — | — | — |
▸case-05 We need to add local user authentication via fingerprint and facial recognition on iOS and Android. A team member suggests storing raw biometric data templates in local app storage to compare across sessions. How should biometric authentication be implemented securely? | fail→fail | — | — | — | — | — | — | — | — | — | — | — | — |
▸case-07 To secure HTTPS requests against man-in-the-middle attacks in our production mobile app, developers plan to rely solely on standard OS trust stores without additional domain validation configuration. What network security mechanism should be implemented? | fail→fail | — | — | — | — | — | — | — | — | — | — | — | — |
▸case-04 Our mobile team is tuning Flutter graphics performance on iOS. A developer suggested staying on Skia for iOS 16+ releases to avoid migration risks. Which rendering engine should be recommended for modern Flutter iOS deployments? | fail→fail | — | — | — | — | — | — | — | — | — | — | — | — |
▸case-01 We are planning a cross-platform mobile application for both iOS and Android that needs offline support and biometric authentication. Please provide a detailed architectural proposal and strategy breakdown that covers component hierarchy, state management, security considerations, and an offline synchronization approach. | fail→fail | — | — | — | — | — | — | — | — | — | — | — | — |
▸case-16 To route users directly from email campaigns into specific screens of our mobile app on iOS and Android, developers propose custom URL schemes only (`myapp://`). What secure platform standard linking mechanisms should be used instead? | fail→fail | — | — | — | — | — | — | — | — | — | — | — | — |
▸case-10 For a new native iOS application targeting iOS 16+, engineers are debating whether to build all views using legacy UIKit storyboards. What modern declarative framework should be used as the primary UI technology? | fail→fail | — | — | — | — | — | — | — | — | — | — | — | — |
▸case-02 Our React Native application is suffering from slow launch times and frame drops when rendering complex lists. Please write a step-by-step performance optimization guide outlining actionable diagnostic techniques, code modifications, and verification methods to resolve these performance bottlenecks. | pass→pass | — | — | — | — | — | — | — | — | — | — | — | — |
▸case-03 We want to update our React Native 0.68 application to modern rendering standards. Developers suggest keeping the legacy bridge architecture for custom native modules. Recommend the appropriate React Native core rendering architecture. | fail→pass | — | — | — | — | — | — | — | — | — | — | — | — |
▸case-15 A field-worker mobile app requires offline data entry with automatic background synchronization when internet connectivity returns. Engineers plan to fail all write operations whenever network connection is lost. What architectural approach should be implemented? | fail→fail | — | — | — | — | — | — | — | — | — | — | — | — |
▸case-18 When upgrading our legacy Flutter codebase to Dart 3, developers want to disable sound null safety checks to allow uninitialized null variables across all models. What Dart language feature must be embraced? | fail→fail | — | — | — | — | — | — | — | — | — | — | — | — |
▸case-13 Our build engineer wants to write custom scripts from scratch to handle iOS code signing and App Store Connect uploads. What standard open-source mobile automation toolsuite simplifies these deployment tasks? | fail→fail | — | — | — | — | — | — | — | — | — | — | — | — |
▸case-06 Our enterprise Flutter application requires clear separation of UI and business logic with immutable state streams across complex user flows. Developers are considering mutating global singleton state directly. Recommend an established Flutter architectural state management solution. | fail→fail | — | — | — | — | — | — | — | — | — | — | — | — |
▸case-09 We are starting a native Android application from scratch. The team wants to use legacy XML layout files with view binding across all screens. What modern declarative UI toolkit should be recommended for native Android development? | fail→fail | — | — | — | — | — | — | — | — | — | — | — | — |
▸case-11 Our mobile application handles financial transactions. We need an industry standard security benchmark framework to audit data storage, cryptography, and network communication. Which OWASP standard specifically applies to mobile apps? | fail→fail | — | — | — | — | — | — | — | — | — | — | — | — |
▸case-17 We want to display real-time order delivery status on the iOS Lock Screen while the app is backgrounded. What iOS feature framework handles this live UI capability? | fail→fail | — | — | — | — | — | — | — | — | — | — | — | — |