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web.groovymark@gmail.com
- November 30, 2024
Question 21
Which type of network would likely use narrowband communication?
a) LoRaWAN
b) Wi-Fi
c) Bluetooth
d) Sigfox
Correct Answer: d) Sigfox
Explanation: Sigfox operates in a narrowband, allowing low-power, long-range communication ideal for IoT deployments.
Question 22
What component aggregates IoT data for remote management on the central platform?
a) Customer Edge Device
b) Secure Runtime Environment
c) Device Management Module
d) Protocol Adapter
Correct Answer: c) Device Management Module
Explanation: The Device Management Module centralizes IoT data for remote access, simplifying device control and maintenance.
Question 23
What is the purpose of protocol adapters in IoT systems?
a) To store sensor data
b) To convert data formats between devices
c) To provide internet access
d) To reduce data size
Correct Answer: b) To convert data formats between devices
Explanation: Protocol adapters allow data from diverse devices to be transformed to a compatible format for central IoT platforms.
Question 24
What is a primary function of an IoT runtime environment?
a) Device manufacturing
b) Sensor data collection
c) Remote management of information flows
d) Power supply management
Correct Answer: c) Remote management of information flows
Explanation: An IoT runtime environment manages data flow across various devices, enabling connectivity and data exchange.
Question 25
What is the purpose of the HyperCat specification in IoT?
a) To reduce data usage
b) To define a format for IoT catalogues over Web technologies
c) To increase signal range
d) To manage device power
Correct Answer: b) To define a format for IoT catalogues over Web technologies
Explanation: HyperCat allows IoT data catalogues to be accessible over the web, enhancing interoperability.
Question 26
What does DCAT stand for in IoT interoperability?
a) Data Catalog Vocabulary
b) Data Collection and Analysis Toolkit
c) Device Connectivity and Access Token
d) Distributed Connectivity and Access Table
Correct Answer: a) Data Catalog Vocabulary
Explanation: DCAT is a W3C recommendation to enable interoperability between data catalogues in IoT systems.
Question 27
What is the main purpose of a customer edge device?
a) To store data
b) To send data to the cloud
c) To collect and process data locally
d) To manage device security
Correct Answer: c) To collect and process data locally
Explanation: Customer edge devices provide local processing and limited storage for efficient data handling before cloud transmission.
Question 28
Which IoT feature allows interoperability between multiple devices?
a) Protocol adaptation
b) Data compression
c) Device authentication
d) Signal amplification
Correct Answer: a) Protocol adaptation
Explanation: Protocol adaptation ensures data compatibility between IoT devices, promoting seamless communication.
Question 29
What is the role of data access control in IoT systems?
a) To manage device power
b) To limit access to data for security
c) To send data to sensors
d) To perform analytics on data
Correct Answer: b) To limit access to data for security
Explanation: Access control manages who can view or manipulate data in IoT systems, enhancing data security.
Question 30
. In the context of IoT, what is metadata?
a) Primary sensor data
b) Data that describes other data
c) Signal strength
d) Transmission frequency
Correct Answer: b) Data that describes other data
Explanation: Metadata provides information about other data, aiding in data organization and interpretation.
Question 31
What is the purpose of access control in IoT platforms?
a) To limit data access for security
b) To increase signal strength
c) To enhance data speed
d) To manage device locations
Correct Answer: a) To limit data access for security
Explanation: Access control in IoT ensures only authorized entities can access sensitive data, safeguarding privacy.
Question 32
What is the main use of discovery in IoT ecosystems?
a) Locating information aggregators with relevant data
b) Managing device power
c) Amplifying data signals
d) Encrypting sensor data
Correct Answer: a) Locating information aggregators with relevant data
Explanation: Discovery identifies which IoT data sources contain relevant information for efficient data retrieval.
Question 33
What does the Secure Runtime Environment protect in an IoT system?
a) Physical device security
b) Unauthorized data access and malicious software
c) Data storage capacity
d) Device battery life
Correct Answer: b) Unauthorized data access and malicious software
Explanation: The Secure Runtime Environment mitigates security risks by restricting access and monitoring for malware.
Question 34
Which communication type is best for mission-critical IoT applications requiring low latency?
a) LPWAN
b) Zigbee
c) URLLC
d) LoRa
Correct Answer: c) URLLC
Explanation: Ultra-Reliable Low-Latency Communication (URLLC) supports applications like remote surgery or autonomous vehicles with minimal delay.
Question 35
What aspect of IoT does the term “batch processing” refer to?
a) Processing each data point individually
b) Grouping and processing data at intervals
c) Real-time processing of data
d) Compression of sensor data
Correct Answer: b) Grouping and processing data at intervals
Explanation: Batch processing involves handling data in groups at specific intervals, unlike real-time processing.
Question 36
In IoT, what is “stream processing”?
a) Real-time processing of data as it’s generated
b) Group processing of data
c) Signal enhancement
d) Compressing large datasets
Correct Answer: a) Real-time processing of data as it's generated
Explanation: Stream processing handles data in real-time, processing it as it's received, suitable for time-sensitive applications.
Question 37
Which tool is designed to enable interoperability between IoT catalogues?
a) DCAT
b) LTE-M
c) LoRa
d) AMI
Correct Answer: a) DCAT
Explanation: DCAT (Data Catalog Vocabulary) facilitates interoperability between various IoT data catalogues, enhancing compatibility.
Question 38
What is a key benefit of stream processing for IoT applications?
a) Low data transfer rate
b) Real-time data analysis
c) Reduced data accuracy
d) Grouping data for later analysis
Correct Answer: b) Real-time data analysis
Explanation: Stream processing allows immediate data analysis, beneficial for time-sensitive IoT applications.
Question 39
What does the Lambda architecture in data processing support?
a) Only batch processing
b) Only stream processing
c) Both stream and batch processing
d) Data compression
Correct Answer: c) Both stream and batch processing
Explanation: Lambda architecture combines stream and batch processing to provide both real-time and historical data analysis.
Question 40
What is the main benefit of dimensionality reduction in IoT data?
a) Reducing storage space
b) Increasing signal range
c) Reducing the number of variables
d) Enhancing data security
Correct Answer: c) Reducing the number of variables
Explanation: Dimensionality reduction simplifies data analysis by focusing on fewer variables, making insights more manageable.
