ICT Mobile and IoT Devices 4

Question 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?

Accepted Answer

Third-party cable lacks proper wattage/data pins

Answer

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

Question 2

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

Accepted Answer

Uses satellite signals for accurate outdoor positioning without cellular data

Answer

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

Question 3

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

Accepted Answer

Edge computing

Answer

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

Question 4

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

Accepted Answer

Adware installed via sideloaded APK

Answer

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.

Question 5

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

Accepted Answer

Provides stronger password-based authentication resistant to offline dictionary attacks

Answer

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

ICT - Information Communication Technology Practice Test

ICT - Information Communication Technology Practice Test

ICT Mobile and IoT Devices 4