# Push Notifications (React Native) > FCM, APNs, react-native-firebase, 로컬 알림, 백그라운드 처리 - 18 면접 질문 - Mid-Level - [면접 질문: React Native](https://sharpskill.dev/ko/technologies/react-native/interview-questions.md) ## 1. 푸시 알림과 로컬 알림의 근본적인 차이점은 무엇인가요? **답변** 푸시 알림은 FCM이나 APNs 같은 서비스를 통해 원격 서버에서 전송되는 반면, 로컬 알림은 네트워크 연결 없이 기기의 앱에서 직접 생성됩니다. 로컬 알림은 리마인더, 알람 또는 로컬에서 예약된 이벤트에 유용합니다. ## 2. Firebase Cloud Messaging (FCM)이란 무엇인가요? **답변** FCM은 Android와 iOS에서 푸시 알림을 무료로 보낼 수 있는 Google의 서비스입니다. 기존의 Google Cloud Messaging (GCM)을 대체했으며 개별 기기, 그룹 또는 topic에 메시지를 보낼 수 있습니다. FCM은 연결과 메시지 전달을 자동으로 처리합니다. ## 3. APNs (Apple Push Notification service)란 무엇인가요? **답변** APNs는 iOS, iPadOS, watchOS, tvOS, macOS 기기로 푸시 알림을 보내기 위한 Apple의 공식 서비스입니다. iOS를 직접 대상으로 지정할 수 있는 FCM과 달리, Apple 기기로의 알림은 반드시 APNs를 거쳐야 합니다. FCM은 iOS에서 알림을 전달하기 위해 내부적으로 APNs를 사용합니다. ## 15개 추가 질문 이용 가능 - React Native에서 Firebase로 푸시 알림을 구현하는 데 권장되는 라이브러리는 무엇인가요? - FCM 토큰(device token)이란 무엇이며 어디에 사용되나요? 무료로 가입하기: https://sharpskill.dev/ko/login ## 기타 React Native 면접 주제 - [JavaScript 핵심](https://sharpskill.dev/ko/technologies/react-native/interview-questions/javascript-essentials.md): 25개 질문, Junior - [React 기초](https://sharpskill.dev/ko/technologies/react-native/interview-questions/react-fundamentals.md): 20개 질문, Junior - [React Native 기초](https://sharpskill.dev/ko/technologies/react-native/interview-questions/react-native-basics.md): 22개 질문, Junior - [React Hooks](https://sharpskill.dev/ko/technologies/react-native/interview-questions/react-hooks.md): 20개 질문, Junior - [React 및 React Native를 위한 TypeScript](https://sharpskill.dev/ko/technologies/react-native/interview-questions/typescript-for-react-native.md): 22개 질문, Junior - [React Native 컴포넌트 및 API](https://sharpskill.dev/ko/technologies/react-native/interview-questions/rn-components-api.md): 20개 질문, Junior - [React Native 스타일링 및 레이아웃](https://sharpskill.dev/ko/technologies/react-native/interview-questions/rn-styling-layout.md): 18개 질문, Junior - [React Native 내비게이션](https://sharpskill.dev/ko/technologies/react-native/interview-questions/rn-navigation.md): 22개 질문, Mid-Level - [React Native 상태 관리](https://sharpskill.dev/ko/technologies/react-native/interview-questions/rn-state-management.md): 24개 질문, Mid-Level - [React Native 네트워킹 및 API](https://sharpskill.dev/ko/technologies/react-native/interview-questions/rn-networking-api.md): 20개 질문, Mid-Level - [데이터 영속성](https://sharpskill.dev/ko/technologies/react-native/interview-questions/rn-data-persistence.md): 20개 질문, Mid-Level - [폼과 유효성 검사](https://sharpskill.dev/ko/technologies/react-native/interview-questions/rn-forms-validation.md): 18개 질문, Mid-Level - [React Native 애니메이션](https://sharpskill.dev/ko/technologies/react-native/interview-questions/rn-animations.md): 22개 질문, Mid-Level - [Native Modules & Bridge](https://sharpskill.dev/ko/technologies/react-native/interview-questions/rn-native-modules.md): 20개 질문, Mid-Level - [플랫폼별 코드](https://sharpskill.dev/ko/technologies/react-native/interview-questions/rn-platform-specific-code.md): 18개 질문, Mid-Level - [권한 및 디바이스 API](https://sharpskill.dev/ko/technologies/react-native/interview-questions/rn-permissions-apis.md): 20개 질문, Mid-Level - [React Native 테스팅](https://sharpskill.dev/ko/technologies/react-native/interview-questions/rn-testing.md): 20개 질문, Mid-Level - [React Native 디버깅](https://sharpskill.dev/ko/technologies/react-native/interview-questions/rn-debugging.md): 18개 질문, Mid-Level - [Build & Deployment](https://sharpskill.dev/ko/technologies/react-native/interview-questions/rn-build-deployment.md): 20개 질문, Mid-Level - [Expo vs React Native Bare](https://sharpskill.dev/ko/technologies/react-native/interview-questions/expo-vs-bare-rn.md): 18개 질문, Mid-Level - [성능 최적화](https://sharpskill.dev/ko/technologies/react-native/interview-questions/rn-performance-optimization.md): 24개 질문, Senior - [메모리 관리](https://sharpskill.dev/ko/technologies/react-native/interview-questions/rn-memory-management.md): 20개 질문, Senior - [Architecture Patterns](https://sharpskill.dev/ko/technologies/react-native/interview-questions/rn-architecture-patterns.md): 22개 질문, Senior - [React Native New Architecture](https://sharpskill.dev/ko/technologies/react-native/interview-questions/rn-new-architecture.md): 24개 질문, Senior - [보안 모범 사례](https://sharpskill.dev/ko/technologies/react-native/interview-questions/rn-security-best-practices.md): 20개 질문, Senior - [Offline-First Architecture](https://sharpskill.dev/ko/technologies/react-native/interview-questions/rn-offline-first.md): 20개 질문, Senior - [React Native CI/CD](https://sharpskill.dev/ko/technologies/react-native/interview-questions/rn-ci-cd.md): 20개 질문, Senior - [Monorepo와 코드 공유](https://sharpskill.dev/ko/technologies/react-native/interview-questions/rn-monorepo-architecture.md): 18개 질문, Senior - [고급 주제](https://sharpskill.dev/ko/technologies/react-native/interview-questions/rn-advanced-topics.md): 22개 질문, Senior - [앱 라이프사이클 및 백그라운드 실행](https://sharpskill.dev/ko/technologies/react-native/interview-questions/rn-app-lifecycle-background.md): 20개 질문, Mid-Level - [인증 및 세션 관리](https://sharpskill.dev/ko/technologies/react-native/interview-questions/rn-auth-session-management.md): 22개 질문, Mid-Level - [Monitoring & Crash Reporting](https://sharpskill.dev/ko/technologies/react-native/interview-questions/rn-monitoring-crash-reporting.md): 20개 질문, Senior --- Source: SharpSkill (https://sharpskill.dev), tech interview preparation for your real stack. 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