Native Applications ISE Practice Questions (Page 7)

Questions 31–35

1. 31application · medium

   A logistics company is developing a companion app for a fleet of IoT-enabled delivery drones. The app must allow field technicians to pair with a drone over Bluetooth Low Energy (BLE), view real-time telemetry, and send control commands even when cellular coverage is unavailable. The team is evaluating whether to build a native app or a hybrid web app. Which consideration most strongly favors a native app in this scenario?

   • ANative apps are automatically approved faster by app stores because they use platform-specific code.
   • BNative apps can be written once and deployed to both Android and iOS without modification.
   • CNative apps can directly access the device's BLE stack and maintain a persistent connection with lower latency.
   • DNative apps do not require any permissions from the operating system to access hardware features.
   Reveal Solution Discussion Select an answer first
2. 32application · medium

   A team is designing a native app for a wearable health monitor. The app must collect sensor data, process it locally, and synchronize with a cloud backend when Wi-Fi is available. Which architecture best fits this requirement?

   • AA direct client-server architecture where the app sends every sensor reading to the cloud in real-time.
   • BA monolithic architecture where all processing is done in the cloud and the app is a dumb terminal.
   • CA local data layer with a repository pattern that queues data and syncs via a background service when connectivity is available.
   • DA web-based architecture where the app is a thin client that renders data from the cloud.
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4. 33application · medium

   A developer is designing a native iOS app that aggregates data from multiple BLE sensors and sends it to a cloud dashboard. The app must remain responsive while handling frequent sensor updates. Which architectural pattern best supports this requirement?

   • AA single view controller that directly manages all BLE connections and updates the UI.
   • BA model-view-controller (MVC) pattern with a separate service layer for BLE communication and a delegate to update the view.
   • CA web view that loads a JavaScript library to handle BLE communication.
   • DA global singleton that holds all sensor data and updates the UI directly.
   Reveal Solution Discussion Select an answer first
5. 34expert · hard

   A developer is testing a native Android app that communicates with a smart lock over BLE. The app sometimes fails to connect to the lock after the phone's Bluetooth adapter is turned off and on again. The developer wants to write an automated test that reproduces this issue. Which testing approach is most appropriate?

   • AWrite a unit test that mocks the Bluetooth adapter and simulates turning it off and on.
   • BWrite a performance test that measures the time to connect to the lock.
   • CWrite a static analysis test that checks for Bluetooth permission declarations.
   • DWrite an instrumentation test that runs on a device and toggles the Bluetooth adapter while the app is in the foreground.
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6. 35foundation · easy

   Which of the following is a common security risk specific to native IoT applications?

   • APhishing via email
   • BSQL injection in the app store
   • CBrowser-based cross-site scripting
   • DInsecure data storage on the device
   Reveal Solution Discussion Select an answer first