Q.1 Which layer in IoT architecture is primarily responsible for data sensing and collection?
Perception Layer
Network Layer
Application Layer
Processing Layer
Explanation - The perception layer in IoT architecture contains sensors and actuators that sense and collect environmental data.
Correct answer is: Perception Layer
Q.2 What is the primary function of the Network Layer in IoT architecture?
Data storage
Data transmission
Data visualization
Data sensing
Explanation - The network layer transfers data collected by sensors to other devices or servers for processing.
Correct answer is: Data transmission
Q.3 Which layer of IoT architecture ensures decision-making using analytics?
Perception Layer
Application Layer
Processing Layer
Network Layer
Explanation - The processing layer uses analytics and storage to process raw data into meaningful insights.
Correct answer is: Processing Layer
Q.4 The Application Layer in IoT is mainly responsible for:
User interaction
Data collection
Routing packets
Sensor deployment
Explanation - The application layer provides IoT services to end-users, allowing interaction with the system.
Correct answer is: User interaction
Q.5 Which IoT architecture layer involves RFID and sensor devices?
Application Layer
Perception Layer
Network Layer
Service Layer
Explanation - The perception layer uses devices such as RFID, sensors, and actuators to interact with the environment.
Correct answer is: Perception Layer
Q.6 Which of the following technologies is commonly used in the Network Layer of IoT?
Wi-Fi
Soil Sensors
Data Visualization Tools
User Interfaces
Explanation - The network layer uses communication technologies such as Wi-Fi, Bluetooth, and ZigBee to transfer data.
Correct answer is: Wi-Fi
Q.7 What role does the Middleware/Processing Layer play in IoT?
Handles user interface
Manages protocols
Processes and stores data
Detects environmental changes
Explanation - The middleware or processing layer handles storage and analytics, enabling intelligent decisions.
Correct answer is: Processes and stores data
Q.8 In a three-layer IoT architecture, which is the first layer?
Perception Layer
Network Layer
Application Layer
Processing Layer
Explanation - The perception layer is the first layer, responsible for sensing physical phenomena and converting them to data.
Correct answer is: Perception Layer
Q.9 Which layer ensures data is delivered securely to processing systems?
Perception Layer
Network Layer
Application Layer
Service Layer
Explanation - The network layer transfers data from sensors to cloud or processing units securely and reliably.
Correct answer is: Network Layer
Q.10 Which of these is NOT a function of the Perception Layer?
Data sensing
Data collection
Data transmission
Actuation
Explanation - Data transmission is handled by the network layer, not the perception layer.
Correct answer is: Data transmission
Q.11 The IoT Application Layer is most directly related to:
Users
Routers
Sensors
Data packets
Explanation - The application layer delivers IoT services and interfaces to end-users.
Correct answer is: Users
Q.12 Which layer acts as a bridge between perception and application layers?
Processing Layer
Network Layer
Middleware Layer
Service Layer
Explanation - The network layer bridges perception and application by transporting data between them.
Correct answer is: Network Layer
Q.13 Cloud computing is mostly associated with which IoT architecture layer?
Perception Layer
Network Layer
Processing Layer
Application Layer
Explanation - Cloud computing provides storage and analytics, which are core functions of the processing layer.
Correct answer is: Processing Layer
Q.14 Which of these best describes IoT architecture?
Two layers
Three layers
Four or five layers
Only one layer
Explanation - Basic IoT architecture is typically described with three main layers: perception, network, and application.
Correct answer is: Three layers
Q.15 Which layer of IoT uses technologies like 4G/5G and ZigBee?
Perception Layer
Network Layer
Application Layer
Middleware Layer
Explanation - Communication technologies such as 4G/5G and ZigBee are part of the network layer.
Correct answer is: Network Layer
Q.16 Decision-making algorithms in IoT are usually implemented in which layer?
Application Layer
Network Layer
Perception Layer
Processing Layer
Explanation - The processing layer performs analytics and decision-making using algorithms.
Correct answer is: Processing Layer
Q.17 Which layer in IoT architecture ensures seamless user services?
Perception Layer
Application Layer
Processing Layer
Network Layer
Explanation - The application layer ensures smooth delivery of IoT services to users.
Correct answer is: Application Layer
Q.18 Sensors like temperature and humidity sensors are found in which layer?
Application Layer
Network Layer
Perception Layer
Processing Layer
Explanation - Sensors for environmental parameters belong to the perception layer.
Correct answer is: Perception Layer
Q.19 Which of these components is essential in IoT’s Processing Layer?
Cloud storage
Smartphone apps
RFID tags
Wireless routers
Explanation - Cloud storage and analytics are key elements of the processing layer in IoT.
Correct answer is: Cloud storage
Q.20 Which IoT layer deals with protocols like MQTT and CoAP?
Perception Layer
Application Layer
Network Layer
Processing Layer
Explanation - Protocols such as MQTT and CoAP are used for data communication in the network layer.
Correct answer is: Network Layer
Q.21 The main function of actuators in the IoT architecture is:
Collecting data
Transmitting data
Taking action
Analyzing data
Explanation - Actuators receive processed instructions and perform actions in the real world.
Correct answer is: Taking action
Q.22 The layer that directly interacts with physical environments in IoT is:
Application Layer
Processing Layer
Network Layer
Perception Layer
Explanation - The perception layer collects data from the physical environment via sensors.
Correct answer is: Perception Layer
Q.23 Which of these is an example of IoT application layer usage?
Smart home app
RFID reader
ZigBee protocol
Temperature sensor
Explanation - Smart home apps belong to the application layer since they interact with users.
Correct answer is: Smart home app
Q.24 Which IoT layer is primarily concerned with converting physical signals into digital data?
Application Layer
Network Layer
Processing Layer
Perception Layer
Explanation - The perception layer translates physical parameters into digital data using sensors.
Correct answer is: Perception Layer
Q.25 Edge computing belongs to which IoT architecture layer?
Application Layer
Processing Layer
Perception Layer
Network Layer
Explanation - Edge computing processes data closer to devices, making it part of the processing layer.
Correct answer is: Processing Layer