IT and Technology IoT & Emerging Technologies

Question 1

Which communication protocol is most commonly used for lightweight IoT messaging?

Accepted Answer

MQTT

Answer

MQTT is a lightweight publish-subscribe protocol designed for constrained devices and low-bandwidth, high-latency IoT networks.

Question 2

What is edge computing in the context of IoT?

Accepted Answer

Processing data closer to the device rather than sending everything to the cloud

Answer

Edge computing moves processing and storage closer to where data is generated, reducing latency and bandwidth usage compared to centralized cloud processing.

Question 3

Which security concern is most prevalent in IoT deployments?

Accepted Answer

Use of default or hardcoded credentials

Answer

Many IoT devices ship with default usernames and passwords that users never change, making them easy targets for botnet attacks like Mirai.

Question 4

What does a digital twin represent in IoT?

Accepted Answer

A virtual replica of a physical device or system for simulation

Answer

A digital twin is a virtual model that mirrors a physical asset in real time, enabling simulation, monitoring, and predictive maintenance.

Question 5

Which wireless technology is designed for long-range, low-power IoT communication?

Accepted Answer

LoRaWAN

Answer

LoRaWAN (Long Range Wide Area Network) is designed for IoT devices that need to transmit small amounts of data over several kilometers while running on battery for years.

IT and Technology Practice Test

IT and Technology Practice Test

IT and Technology IoT & Emerging Technologies