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web.groovymark@gmail.com
- November 30, 2024
Question 21
What type of IoT system would benefit most from URLLC?
a) Agricultural sensors
b) Autonomous driving systems
c) Smart thermostats
d) Home security cameras
Correct Answer: b) Autonomous driving systems
Explanation: URLLC ensures minimal latency and high reliability, critical for applications like autonomous driving that demand instant response.
Question 22
What technology enables IoT devices to transmit data over long distances with minimal power usage?
a) LoRa
b) Wi-Fi
c) Bluetooth
d) Ethernet
Correct Answer: a) LoRa
Explanation: LoRa is designed for long-range, low-power communications, making it ideal for remote IoT applications.
Question 23
What function does the IoT runtime environment serve?
a) Provides physical housing for IoT devices
b) Allows remote management of information flows
c) Controls power supply for IoT devices
d) Transmits data across networks
Correct Answer: b) Allows remote management of information flows
Explanation: The runtime environment in IoT enables control over data flows, integrating applications and managing connectivity.
Question 24
In IoT, what is a Virtual Machine Cloud Machine (vMCM) used for?
a) Managing data storage
b) Providing digital twin services
c) Controlling physical devices
d) Transmitting data
Correct Answer: b) Providing digital twin services
Explanation: vMCM enables the creation of digital twins for monitoring and managing physical assets remotely in IoT systems.
Question 25
What is the purpose of data compression in IoT?
a) Enhance security
b) Reduce data transmission and storage requirements
c) Increase data accuracy
d) Ensure data accessibility
Correct Answer: b) Reduce data transmission and storage requirements
Explanation: Data compression helps save storage space and minimizes transmission bandwidth, making IoT systems more efficient.
Question 26
Which technology is typically used in smart agriculture for soil monitoring?
a) Wi-Fi
b) Zigbee
c) SigFox
d) GSM
Correct Answer: c) SigFox
Explanation: SigFox, with its low power and long-range capabilities, is often employed in remote agricultural areas for environmental monitoring.
Question 27
What is the primary goal of the Kappa architecture in data processing?
a) Batch data processing
b) Stream-only data processing
c) Data compression
d) Real-time visualization
Correct Answer: b) Stream-only data processing
Explanation: Kappa architecture focuses exclusively on processing data streams, ideal for continuous data processing needs.
Question 28
What does the term “edge computing” refer to in IoT?
a) Data storage in the cloud
b) Processing data near the source
c) Transmitting data over long distances
d) Encrypting data for security
Correct Answer: b) Processing data near the source
Explanation: Edge computing processes data close to where it’s generated, reducing latency and reliance on central data centers.
Question 29
What is the primary purpose of data summarization in IoT analytics?
a) To store raw data
b) To secure data
c) To represent data trends concisely
d) To increase data volume
Correct Answer: c) To represent data trends concisely
Explanation: Summarization simplifies complex data into key trends, aiding quick understanding for both human and machine analysis.
Question 30
What does OAUTH2.0 service in vAAA provide in IoT systems?
a) Enhanced data transmission
b) Device mobility management
c) Secure authorization for data access
d) Real-time data processing
Correct Answer: c) Secure authorization for data access
Explanation: OAUTH2.0 is used in IoT systems for secure, authenticated access control, protecting sensitive data.
Question 31
In IoT, what does the acronym DCAT refer to?
a) Device Catalog Architecture Technology
b) Data Catalog Vocabulary
c) Digital Content Access Tool
d) Device Control Access Technology
Correct Answer: b) Data Catalog Vocabulary
Explanation: DCAT is a W3C recommendation aimed at improving data catalog interoperability, making it easier to share and access IoT data.
Question 32
What is the primary purpose of a smart meter in IoT applications?
a) To monitor air quality
b) To measure and communicate energy consumption data
c) To calculate temperature changes
d) To measure soil moisture
Correct Answer: b) To measure and communicate energy consumption data
Explanation: Smart meters track energy use and relay this information to utilities and consumers, facilitating energy management and monitoring.
Question 33
What technology is designed for low-power, wide-area communication in IoT?
a) LoRaWAN
b) Wi-Fi
c) Ethernet
d) Zigbee
Correct Answer: a) LoRaWAN
Explanation: LoRaWAN is optimized for low-power, long-range communication, suitable for IoT applications like agriculture and smart city infrastructure.
Question 34
What is the function of an actuator in an IoT system?
a) To collect data
b) To send data
c) To perform actions based on received commands
d) To store data
Correct Answer: c) To perform actions based on received commands
Explanation: Actuators execute physical actions, such as opening valves or adjusting settings, based on instructions from IoT systems.
Question 35
What does NGSI-9 specify in IoT?
a) Device discovery
b) Data access protocol
c) Context entity discovery
d) Sensor calibration
Correct Answer: c) Context entity discovery
Explanation: NGSI-9 is a standard that provides context entity discovery, enabling IoT systems to locate devices and their information.
Question 36
Which protocol is commonly used for short-range communication in IoT home automation?
a) LoRa
b) Zigbee
c) LTE
d) Ethernet
Correct Answer: b) Zigbee
Explanation: Zigbee is widely used for low-power, short-range communication, ideal for IoT home automation systems like smart lighting.
Question 37
What is the role of MQTT in IoT?
a) Ensuring high-speed data transfer
b) Securing data storage
c) Enabling lightweight, publish-subscribe messaging
d) Providing video transmission
Correct Answer: c) Enabling lightweight, publish-subscribe messaging
Explanation: MQTT is a messaging protocol designed for lightweight, low-bandwidth communication, commonly used in IoT systems.
Question 38
In IoT, what is the purpose of “data aggregation”?
a) To secure data from unauthorized access
b) To collect and consolidate data from various sources
c) To delete unused data
d) To reduce data accuracy
Correct Answer: b) To collect and consolidate data from various sources
Explanation: Data aggregation in IoT combines data from multiple devices, allowing for centralized analysis and insights.
Question 39
What does the term “semantic interoperability” mean in IoT?
a) Devices can physically connect to each other
b) Devices can interpret data in a common context
c) Devices increase bandwidth use
d) Devices compress data automatically
Correct Answer: b) Devices can interpret data in a common context
Explanation: Semantic interoperability ensures that devices interpret data in a shared, meaningful way, promoting seamless integration.
Question 40
What is a “smart contract” in IoT and blockchain?
a) A type of data encryption method
b) A self-executing contract with terms coded into the blockchain
c) A physical document stored in the cloud
d) A tool for compressing IoT data
Correct Answer: b) A self-executing contract with terms coded into the blockchain
Explanation: Smart contracts execute agreed terms automatically within the blockchain, often used in IoT for automated transactions.
