Push Notifications u0026 Deep Linking in React Native Quiz Quiz

Explore essential concepts of push notifications and deep linking in React Native. This quiz covers how to implement, configure, and understand the behaviors of push notifications and deep links within mobile apps, helping developers strengthen their core skills in these areas.

1. Understanding Push Notification Basics

   Which statement correctly describes a push notification in the context of a mobile app?

   1. A push notification only works when the app is in the foreground.
   2. A push notification always requires user input to be displayed.
   3. A push notification is just another term for an in-app alert triggered by local code.
   4. A push notification is a message sent from a server to a user’s device even when the app is not running.

   Explanation: A push notification allows messages to be sent from a remote server, appearing on a user's device regardless of whether the app is active, backgrounded, or closed. Option B is incorrect because push notifications can appear when the app is not in the foreground. Option C confuses push notifications with local notifications, which are initiated within the app. Option D is misleading, as push notifications can be displayed without user action.

2. Deep Linking Definition

   What does deep linking enable in mobile applications such as those built with React Native?

   1. It lets users unlock premium features without authentication.
   2. It allows users to directly open a specific screen or page within the app via a custom URL.
   3. It automatically updates the app content whenever a new push notification is received.
   4. It increases app size by embedding media files.

   Explanation: Deep linking enables users to access a particular part of an app by clicking a special link, making navigation smoother and more contextual. Unlocking premium features (option B) is unrelated to deep linking. Option C confuses deep linking with notification handling. Option D is incorrect, as deep linking has no direct impact on app size or file embedding.

3. Push Notification Components

   Which component is essential for a mobile device to receive push notifications?

   1. A signed user agreement
   2. A deep link handler function within the app
   3. A unique device token assigned by the notification service
   4. An embedded video player

   Explanation: A device token allows a remote server to target and deliver push notifications to the correct device. Option B is related to deep linking, not push notifications. Option C, while important for user consent, is not required for the technical delivery. Option D has no relevance to receiving push notifications.

4. Handling Notification Taps

   When a user taps a push notification, what should an app typically do to enhance user experience?

   1. Log the user out for security purposes
   2. Navigate to a relevant screen based on the notification's content
   3. Delete all stored data immediately
   4. Ignore the tap event and show the home screen

   Explanation: Responding to a notification tap by navigating to relevant content provides a seamless and contextual user experience. Logging the user out (option B) would frustrate users and is not standard practice. Ignoring the event (option C) misses an opportunity for engagement. Deleting data (option D) is not related and could cause users to lose valuable information.

5. Deep Link Format

   Which format below represents a typical deep link URL in a mobile application?

   1. myapp://profile/123
   2. profile_myapp_123
   3. https//profile@myapp.123
   4. app.my.profile:123

   Explanation: The 'myapp://' scheme with a path like '/profile/123' is a common deep link format used to open a specific app screen. Option B is a malformed URL missing colons and uses non-standard structure. Option C is not in URL format at all. Option D resembles a reverse domain but not a valid deep link syntax.

6. Local vs Push Notifications

   What is a key difference between local notifications and push notifications in React Native?

   1. Local notifications can reach the user when the device is powered off.
   2. Push notifications are always less visible than local notifications.
   3. Local notifications are scheduled by the app itself, while push notifications are sent from an external server.
   4. Push notifications require no permissions, but local notifications do.

   Explanation: Local notifications originate from within the app's code, while push notifications come from remote servers via a cloud service. Option B is incorrect, as visibility depends on implementation. Option C is false; no notifications reach the user when their device is off. Option D reverses the permission requirements, as both typically require permissions.

7. Deep Linking and Navigation

   Why is it important for an app’s navigation system to correctly handle incoming deep links?

   1. To ensure users are directed to the intended screen even if the app was not open
   2. To immediately uninstall the app if the deep link is invalid
   3. To hide all notifications from the user
   4. To increase loading time for added security

   Explanation: Handling deep links effectively ensures that users land on the correct screen, regardless of the app’s prior state, improving usability. Uninstalling the app (option B) for an invalid link is extreme and incorrect. Option C is unrelated to deep linking. Increasing loading time for security (option D) is also irrelevant and not a desired outcome.

8. Opt-in Requirements

   What must a user typically do before an app can send them push notifications?

   1. Grant permission, usually through a system dialog
   2. Change the device wallpaper
   3. Disable airplane mode every time
   4. Manually install extra system libraries

   Explanation: Most platforms require apps to request explicit permission from users before sending push notifications, often through a prompt dialog. Installing libraries manually (option B) is unnecessary for end users. Changing the wallpaper or disabling airplane mode (options C and D) are unrelated steps not required for notification permissions.

9. Deferred Deep Linking

   Which scenario best illustrates the concept of deferred deep linking in mobile apps?

   1. A push notification triggers an app update in the background.
   2. A user clicks a deep link, installs the app, and is taken directly to the linked content after installation.
   3. A user receives an error because their device is out of storage.
   4. A user updates the device operating system, unlocking backup features.

   Explanation: Deferred deep linking ensures that, even if a user installs the app after clicking a link, they will still be directed to the intended content. Option B mixes push notifications with updates. Option C is a generic error scenario. Option D pertains to device updates, not deep linking.

10. Use of Payload Data in Notifications

    Why might a push notification include additional payload data alongside the message text?

    1. To instruct the app on what action to perform when the notification is tapped
    2. To turn off notifications without user consent
    3. To bypass device security features
    4. To change the smartphone's wallpaper automatically

    Explanation: Payload data allows an app to decide what to display or what action to take when a user interacts with a notification. Changing wallpapers (option B), disabling notifications without permission (option C), or bypassing security (option D) are either not possible or unethical uses of payload data.