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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. A technician is troubleshooting a tablet that won't charge. The device shows charging with an OEM cable but not a third-party one. What is the most likely cause?

    Answer: Third-party cable lacks proper wattage/data pins

    Many devices require cables with specific resistance markers or data pins to negotiate fast charging, and cheap third-party cables may lack these.

  2. What is the primary function of a GPS chipset in a smartphone compared to network-based location?

    Answer: Uses satellite signals for accurate outdoor positioning without cellular data

    GPS uses signals from satellites to determine precise location outdoors and works independently of cellular networks.

  3. Which IoT architecture model processes data locally on the device rather than sending everything to the cloud?

    Answer: Edge computing

    Edge computing processes data at or near the source device, reducing latency and bandwidth usage compared to cloud-only architectures.

  4. A user reports their Android phone is displaying ads even when no apps are open. What is the most likely cause?

    Answer: Adware installed via sideloaded APK

    Adware from sideloaded apps (installed outside the Play Store) can display overlay ads system-wide even when the host app is not in the foreground.

  5. What is the purpose of WPA3-SAE in wireless networking for IoT devices?

    Answer: Provides stronger password-based authentication resistant to offline dictionary attacks

    WPA3's SAE (Simultaneous Authentication of Equals) replaces PSK handshakes and prevents offline brute-force attacks on captured handshakes.

  6. Which Android permission group must an app explicitly request to access the device's precise GPS location in the foreground?

    Answer: android.permission.ACCESS_FINE_LOCATION

    ACCESS_FINE_LOCATION is a dangerous permission that grants access to precise GPS coordinates and must be explicitly granted by the user.

  7. A company wants to allow employees to use personal phones for work while keeping corporate data in an isolated container. What solution achieves this?

    Answer: BYOD with containerization (e.g., Samsung Knox)

    Containerization creates a separate encrypted workspace on a personal device where corporate apps and data are isolated from personal content.