ICT Mobile and IoT Devices 5

Question 1

What does the 'Internet of Things' (IoT) primarily refer to?

Accepted Answer

Network of physical devices embedded with sensors that collect and exchange data

Answer

IoT describes the ecosystem of physical objects embedded with sensors, software, and connectivity that enables them to collect and share data over the internet.

Question 2

Which cellular technology introduced network slicing to support diverse IoT use cases simultaneously on the same infrastructure?

Accepted Answer

5G NR

Answer

5G NR introduced network slicing, allowing operators to create virtual dedicated network segments optimized for different IoT use cases like URLLC or mMTC.

Question 3

A wearable fitness tracker syncs data to a smartphone only when within a few meters. Which technology facilitates this short-range, low-energy connection?

Accepted Answer

Bluetooth Low Energy (BLE)

Answer

BLE (Bluetooth Low Energy) is designed for short-range communication with minimal power draw, making it ideal for wearables that sync periodically.

Question 4

What is the primary security risk of leaving a mobile device's developer options and USB debugging enabled?

Accepted Answer

Allows unauthorized ADB access to extract data or install malware when connected to a computer

Answer

USB debugging via ADB (Android Debug Bridge) allows a connected computer to access the device filesystem, install apps, and run commands without screen unlock.

Question 5

Which mobile display technology consumes no power when showing static content because pixels only use energy when changing state?

Accepted Answer

E-Ink (E-Paper)

Answer

E-Ink displays use a bistable mechanism where pixels maintain their state without power, only consuming energy when the image changes.

ICT - Information Communication Technology Practice Test

ICT - Information Communication Technology Practice Test

ICT Mobile and IoT Devices 5