-
web.groovymark@gmail.com
- November 30, 2024
Question 01
Which building block is used to move collected IoT data to the central IoT platform?
a) Edge compute
b) Application
c) Gateway
d) Smart device
Correct Answer: c) Gateway
Explanation: The gateway serves as the bridge that transports data from edge devices to the central IoT platform.
Question 02
What is the function of soil moisture sensors in a smart agriculture ecosystem?
a) Capturing soil moisture metrics
b) Processing soil moisture metrics
c) Activating sprinklers based on low-soil-moisture metrics
d) Transmitting soil moisture metrics to a central network
Correct Answer: a) Capturing soil moisture metrics
Explanation: Soil moisture sensors are designed to measure and capture soil moisture levels, which can be used for analysis.
Question 03
What does LPWAN stand for in IoT?
a) Low Power Wireless Area Network
b) Local Power Wireless Area Network
c) Low Protocol Wireless Area Network
d) Long-range Protocol Wireless Area Network
Correct Answer: a) Low Power Wireless Area Network
Explanation: LPWAN is designed for low-power, long-range communication, suitable for IoT devices in remote or difficult-to-reach areas.
Question 04
Which of the following is a primary characteristic of LPWAN?
a) High data rate
b) Long-range communication with low power consumption
c) High power consumption
d) Short-range communication
Correct Answer: b) Long-range communication with low power consumption
Explanation: LPWAN provides long-range communication capabilities while minimizing power consumption, making it ideal for IoT devices in remote locations.
Question 05
What frequency is commonly used by LPWAN technologies like LoRaWAN in the EU?
a) 915 MHz
b) 2.4 GHz
c) 5 GHz
d) 868 MHz
Correct Answer: d) 868 MHz
Explanation: In the EU, 868 MHz is commonly used by LPWAN technologies as it falls within the ISM (Industrial, Scientific, and Medical) band.
Question 06
Which device in a smart home ecosystem would most likely act as a hub for other devices?
a) Thermostat
b) Gateway
c) Smart bulb
d) Sensor
Correct Answer: b) Gateway
Explanation: A gateway acts as the hub, facilitating communication between different devices and transferring data to a central platform.
Question 07
Which technology is typically used in dense IoT deployments, such as smart cities or buildings?
a) LoRaWAN
b) LTE
c) Wi-Fi
d) Sigfox
Correct Answer: a) LoRaWAN
Explanation: LoRaWAN is well-suited for dense IoT deployments due to its ability to support numerous devices in close proximity.
Question 08
What is the primary function of Zigbee in IoT networks?
a) Long-range communication
b) Short-range communication with meshing capability
c) Data storage
d) Device management
Correct Answer: b) Short-range communication with meshing capability
Explanation: Zigbee is known for its short-range, low-power communication with mesh networking capabilities, suitable for home automation.
Question 09
Which IoT technology is named after the company that owns it and operates in the Narrowband spectrum?
a) LoRa
b) Zigbee
c) Sigfox
d) Bluetooth
Correct Answer: c) Sigfox
Explanation: Sigfox is a proprietary technology that uses narrowband spectrum, focusing on low power consumption for IoT.
Question 10
What type of energy source is classified as a Renewable Energy Source (RES)?
a) Coal
b) Natural gas
c) Solar
d) Nuclear
Correct Answer: c) Solar
Explanation: Renewable energy sources, like solar, are constantly replenished from natural processes, unlike finite resources.
Question 11
Which IoT platform component is responsible for reducing the attack surface through identity access management and secure boot?
a) Central IoT platform
b) Edge device
c) Secure Runtime Environment
d) Gateway
Correct Answer: c) Secure Runtime Environment
Explanation: The Secure Runtime Environment reduces the IoT attack surface by managing identities and providing a secure boot process.
Question 12
What is the main purpose of the Rules Engine in an IoT platform?
a) To collect data from sensors
b) To enforce security protocols
c) To route data based on predefined rules
d) To monitor device health
Correct Answer: c) To route data based on predefined rules
Explanation: The Rules Engine directs data from sensors based on predefined rules to enable specific actions and data processing.
Question 13
What does the term “spread spectrum” refer to in IoT?
a) Narrowband signal
b) Signal transmission across a wide bandwidth
c) High-power signal transmission
d) Low data rate transmission
Correct Answer: b) Signal transmission across a wide bandwidth
Explanation: Spread spectrum refers to transmitting data across a larger bandwidth, reducing interference and increasing security.
Question 14
What is the primary benefit of LoRaWAN’s spread spectrum technique?
a) Reduced signal range
b) Improved interference resistance and security
c) Increased data rate
d) Higher power consumption
Correct Answer: b) Improved interference resistance and security
Explanation: LoRaWAN uses spread spectrum to reduce interference and enhance security, making it ideal for dense IoT deployments.
Question 15
Which protocol is used by LoRaWAN to communicate between devices and gateways?
a) Wi-Fi
b) TCP/IP
c) HTTP
d) LoRa
Correct Answer: d) LoRa
Explanation: LoRaWAN is based on the LoRa protocol, enabling long-range, low-power communication between devices and gateways.
Question 16
What is the function of a motion sensor in IoT-enabled lighting?
a) To reduce power usage when rooms are empty
b) To measure energy consumption
c) To collect data from other devices
d) To increase signal range
Correct Answer: a) To reduce power usage when rooms are empty
Explanation: Motion sensors in IoT lighting help save energy by detecting occupancy and adjusting lighting accordingly.
Question 17
In an IoT ecosystem, what is a dataset?
a) A measurement from a sensor
b) A key-value pair of data
c) A type of sensor
d) An aggregation of sensor-based and other data
Correct Answer: d) An aggregation of sensor-based and other data
Explanation: A dataset in IoT is an aggregated set of data that often combines multiple sensor readings and data types.
Question 18
Which IoT technology is optimized for long battery life with low throughput?
a) Wi-Fi
b) Bluetooth
c) LTE-M
d) Zigbee
Correct Answer: c) LTE-M
Explanation: LTE-M is designed to extend battery life by reducing data rates, making it suitable for IoT applications requiring long-term deployment.
Question 19
Which frequency band is utilized by Zigbee networks?
a) 2.4 GHz
b) 868 MHz
c) 915 MHz
d) 5 GHz
Correct Answer: a) 2.4 GHz
Explanation: Zigbee operates in the 2.4 GHz frequency band, a globally available unlicensed spectrum suitable for short-range communications.
Question 20
What is the main feature of the LoRa protocol in IoT networks?
a) High data rates
b) Spread spectrum technique
c) Short-range communication
d) High power consumption
Correct Answer: b) Spread spectrum technique
Explanation: LoRa utilizes spread spectrum, which enhances security and reduces interference, making it ideal for IoT applications.
