Mobile Applications ISE Practice Questions (Page 1)

Questions 1–5

1. 1expert · hard · select all that apply

   A company is about to release a major update to its mobile IoT app that controls smart locks. The update includes a new security protocol that is incompatible with older firmware on some locks. The company wants to ensure a smooth rollout and minimize the risk of users being locked out. Which of the following practices should be part of the release plan? (Select all that apply.)

   • AForce all users to update the app on the same day to ensure uniformity
   • BSkip beta testing to speed up the release
   • CProvide a fallback to the old protocol for locks that cannot be updated
   • DCheck the lock's firmware version before enabling the new protocol, and prompt the user to update the firmware if needed
   • EPerform staged rollout of the app update, monitoring crash rates and user feedback before expanding
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2. 2foundation · easy

   Why is real-device testing important for mobile IoT apps despite the availability of simulators?

   • AIt is the only way to test the user interface
   • BIt is faster and cheaper than simulation
   • CIt validates the app's behavior with actual hardware, including connectivity and sensor interactions
   • DIt eliminates the need for any other testing
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4. 3application · medium

   A smart agriculture company is developing a mobile app for farmers to monitor soil moisture sensors spread across a large farm. The sensors communicate via LoRaWAN to a gateway, which forwards data to a cloud platform. The app needs to display near-real-time sensor readings and send commands to irrigation valves. The farm has intermittent internet connectivity. Which architecture best ensures the app remains functional during connectivity outages?

   • AThe app stores all historical sensor data locally on the phone and does not require any cloud or edge processing.
   • BThe app communicates directly with the cloud platform, and all data processing and command routing are handled in the cloud.
   • CThe app uses a peer-to-peer mesh network to communicate directly with each sensor, bypassing the gateway and cloud entirely.
   • DThe app communicates with an edge gateway that caches sensor data locally and queues commands, synchronizing with the cloud when connectivity is restored.
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5. 4foundation · easy

   How does a mobile IoT app typically interact with cloud services to enable remote management?

   • ABy using cloud-based APIs and messaging services to send commands and receive data
   • BBy using a peer-to-peer connection that bypasses any server
   • CBy directly connecting to each IoT device over the internet without any intermediary
   • DBy storing all data locally on the device and never syncing
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6. 5application · medium

   A logistics company is deploying a mobile app for warehouse staff to scan and control IoT-enabled conveyor belts. The app is updated frequently with new features and bug fixes. The company wants to minimize disruption to warehouse operations and ensure that all devices are running a supported version. Which approach best addresses the lifecycle management of this mobile IoT application?

   • ADevelop a custom in-house app that is never updated to avoid disrupting operations.
   • BUse a beta testing program and only release updates to a small group of users.
   • CPublish updates to the app store and rely on users to install them at their convenience.
   • DUse a mobile device management (MDM) solution to enforce mandatory updates within a defined maintenance window.
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