Q.1 What does IoT stand for?
Internet of Tools
Internet of Things
Internet of Technology
Interconnection of Terminals
Explanation - IoT stands for Internet of Things, which refers to interconnected devices that communicate via the internet.
Correct answer is: Internet of Things
Q.2 Which of the following is the main purpose of IoT?
Entertainment
Connecting physical devices to the internet
Playing video games
Building websites
Explanation - IoT enables physical objects to connect to the internet and share data for better automation and decision making.
Correct answer is: Connecting physical devices to the internet
Q.3 Which technology is MOST commonly associated with IoT connectivity?
Bluetooth
Wi-Fi
Ethernet
Fiber optics
Explanation - Wi-Fi is widely used for IoT devices because of its availability and ability to connect devices wirelessly to the internet.
Correct answer is: Wi-Fi
Q.4 Which of the following is an example of an IoT device?
Smartwatch
Desktop Computer
Television (without internet)
Printer (offline)
Explanation - A smartwatch is an IoT device because it connects to the internet and exchanges data with other systems.
Correct answer is: Smartwatch
Q.5 In IoT, sensors are used to:
Play sounds
Capture data from the environment
Control games
Display movies
Explanation - Sensors collect data such as temperature, motion, or humidity, which IoT devices use to make intelligent decisions.
Correct answer is: Capture data from the environment
Q.6 Which communication protocol is lightweight and widely used in IoT?
HTTP
MQTT
SMTP
FTP
Explanation - MQTT (Message Queuing Telemetry Transport) is designed for lightweight communication in IoT applications.
Correct answer is: MQTT
Q.7 What is the role of an actuator in IoT?
Storing data
Collecting data
Performing physical actions
Providing internet
Explanation - Actuators act on signals from IoT systems, such as switching on a fan or opening a valve.
Correct answer is: Performing physical actions
Q.8 Which layer of IoT architecture is responsible for sensing and data collection?
Application Layer
Perception Layer
Network Layer
Processing Layer
Explanation - The perception layer consists of sensors and devices that collect data from the environment.
Correct answer is: Perception Layer
Q.9 Which of the following is NOT an application of IoT?
Smart homes
Healthcare monitoring
Autonomous vehicles
Traditional landline telephones
Explanation - Landline telephones are not part of IoT since they cannot connect and exchange data over the internet.
Correct answer is: Traditional landline telephones
Q.10 What does a smart thermostat represent in IoT?
Sensor device
Actuator
Both sensor and actuator
Only a display
Explanation - A smart thermostat senses temperature and acts by controlling heating or cooling systems, hence both sensor and actuator.
Correct answer is: Both sensor and actuator
Q.11 IoT devices often require which type of computing for real-time decision-making?
Quantum Computing
Edge Computing
Batch Computing
Mainframe Computing
Explanation - Edge computing processes data closer to where it is generated, reducing latency and supporting real-time IoT applications.
Correct answer is: Edge Computing
Q.12 Which of the following is an IoT application in agriculture?
Smart irrigation system
Word processing
Cloud storage
Social media platforms
Explanation - Smart irrigation uses IoT sensors to optimize water usage based on soil moisture and weather conditions.
Correct answer is: Smart irrigation system
Q.13 Which feature of IoT devices makes them vulnerable to cyber-attacks?
Limited processing power
High speed
Strong encryption
Large memory
Explanation - Due to limited computing resources, IoT devices often cannot implement strong security measures, making them vulnerable.
Correct answer is: Limited processing power
Q.14 RFID technology in IoT is mainly used for:
Voice recognition
Object identification and tracking
Video processing
Data storage
Explanation - RFID tags help identify and track objects, commonly used in supply chain and inventory systems.
Correct answer is: Object identification and tracking
Q.15 What type of network is commonly used by wearable IoT devices?
PAN (Personal Area Network)
WAN (Wide Area Network)
MAN (Metropolitan Area Network)
LAN (Local Area Network)
Explanation - Wearable devices often use PAN technologies like Bluetooth to connect to nearby devices.
Correct answer is: PAN (Personal Area Network)
Q.16 Which cloud service model is mostly used for IoT data storage and processing?
SaaS
PaaS
IaaS
All of the above
Explanation - IaaS (Infrastructure as a Service) provides scalable infrastructure for storing and processing IoT data.
Correct answer is: IaaS
Q.17 What does interoperability mean in IoT?
Devices can only work in isolation
Devices can work with different platforms and systems
Devices are locked to one vendor
Devices cannot exchange data
Explanation - Interoperability ensures IoT devices can communicate across platforms and vendors for seamless integration.
Correct answer is: Devices can work with different platforms and systems
Q.18 Which of the following is a wearable IoT device?
Smart Ring
Server
Desktop PC
Traditional watch
Explanation - Smart rings are IoT wearables that can track health or interact with other devices through wireless connectivity.
Correct answer is: Smart Ring
Q.19 IoT is often integrated with which emerging technology for advanced analytics?
Artificial Intelligence (AI)
Blockchain
Quantum Computing
Augmented Reality
Explanation - AI enhances IoT by enabling smart analytics and decision-making based on IoT data.
Correct answer is: Artificial Intelligence (AI)
Q.20 Which of the following best describes a smart city in IoT?
City with internet cafes
City using IoT for infrastructure, transportation, and services
City with more computers
City with tall buildings
Explanation - Smart cities leverage IoT to improve traffic, energy, waste management, and overall quality of life.
Correct answer is: City using IoT for infrastructure, transportation, and services
Q.21 Which security practice is critical for IoT devices?
Using weak passwords
Automatic updates
Disabling encryption
Open access to all
Explanation - Automatic updates ensure IoT devices are protected from new vulnerabilities and security risks.
Correct answer is: Automatic updates
Q.22 What is the role of the network layer in IoT architecture?
Captures sensor data
Transmits data between devices
Applies user interfaces
Controls actuators directly
Explanation - The network layer ensures data collected by sensors is transmitted to processing or storage systems.
Correct answer is: Transmits data between devices
Q.23 Which of these is an IoT application in healthcare?
Fitness trackers
Word processors
Photo editors
Gaming consoles
Explanation - Fitness trackers monitor health data and share it for analysis, making them IoT healthcare devices.
Correct answer is: Fitness trackers
Q.24 Which connectivity technology is specifically designed for low-power IoT devices?
5G
LoRaWAN
Satellite
Fiber optic
Explanation - LoRaWAN is a low-power, wide-area network protocol ideal for battery-operated IoT devices.
Correct answer is: LoRaWAN
Q.25 Which of the following companies is a major provider of IoT cloud platforms?
Amazon Web Services (AWS)
Adobe Photoshop
Microsoft Word
Oracle SQL Developer
Explanation - AWS IoT Core is one of the leading cloud platforms for IoT data storage, processing, and management.
Correct answer is: Amazon Web Services (AWS)