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Mobile and IoT Devices Flashcards

7 cards from real ICT practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.

Read the first 7 Mobile and IoT Devices flashcards as text

  1. An IoT temperature sensor needs to transmit data over several miles with very low power. Which LPWAN technology is most appropriate?

    Answer: LoRaWAN

    LoRaWAN (Long Range Wide Area Network) supports long-range transmission (up to 15+ km) with extremely low power consumption, ideal for remote IoT sensors.

  2. Which mobile device management (MDM) enrollment method requires no user interaction and automatically configures corporate settings when a new device is first powered on?

    Answer: Zero-touch enrollment

    Zero-touch enrollment pre-configures devices before distribution so they automatically enroll in MDM when first activated.

  3. What is the purpose of an eSIM in modern mobile devices?

    Answer: Provides a programmable SIM without a physical card

    An eSIM (embedded SIM) is a programmable chip built into the device that can be remotely provisioned with carrier information without a physical SIM card.

  4. A smart home hub uses Z-Wave to control devices. What frequency band does Z-Wave primarily operate on in the US?

    Answer: 908.42 MHz

    Z-Wave in the US operates at 908.42 MHz, which provides better wall penetration than 2.4 GHz and avoids Wi-Fi congestion.

  5. Which feature in iOS allows apps to continue brief background tasks after the user switches away, such as finishing a download?

    Answer: Background App Refresh

    Background App Refresh allows iOS apps to fetch new content and complete tasks in the background when on Wi-Fi or cellular.

  6. What does 'tethering' refer to on a mobile device?

    Answer: Sharing a mobile data connection with other devices

    Tethering allows a mobile device to share its cellular data connection with other devices via Wi-Fi hotspot, USB, or Bluetooth.

  7. Which security feature on modern smartphones stores cryptographic keys and performs sensitive operations in an isolated hardware environment separate from the main OS?

    Answer: Secure Enclave / Secure Element

    A Secure Enclave (Apple) or Secure Element is dedicated hardware that stores keys and performs cryptographic operations in isolation from the main processor.