The Internet of Things (IoT) is one of the most exciting and emerging areas in Computer Science. It plays a key role in smart devices, automation, and real-time data processing. For ECET 2026 CSE students, understanding what IoT is and how it works is essential for both theory and MCQ-based exams. This concept is often tested directly in the IoT section of APECET and TSECET under the C-23 curriculum. Let’s understand IoT in simple terms and test your preparation with 10 expected MCQs.
📘 Concept Notes – What is IoT?
🌐 Definition:
The Internet of Things (IoT) refers to the network of physical devices (like sensors, appliances, vehicles) that are connected to the Internet and can collect, send, and receive data.
🔧 How It Works:
IoT systems consist of:
- Devices/Sensors – Collect data (e.g., temperature, motion).
- Connectivity – Use Wi-Fi, Bluetooth, Zigbee, etc., to transmit data.
- Data Processing – Cloud servers or edge devices analyze the data.
- User Interface – Results are displayed via apps or dashboards.
🏠 Examples:
- Smart Home Devices (Alexa, Google Nest)
- Smartwatches & Fitness Trackers
- IoT in Agriculture (soil moisture sensors)
- Industrial IoT (real-time machine monitoring)
💡 Key Characteristics:
- Automation: Devices operate with little human intervention.
- Real-Time Monitoring: Live updates and alerts.
- Remote Access: Control from anywhere via internet.
- Scalability: Easily expandable network of devices.
📶 Communication Protocols:
- MQTT (Message Queue Telemetry Transport)
- HTTP, CoAP, Zigbee, LoRaWAN
🔟 10 Most Expected MCQs – ECET 2026 [What is IoT?]
Q1. What does IoT stand for?
A) Internet of Tools
B) Internet of Tasks
C) Internet of Things
D) Integration of Technology
Q2. Which of the following is an example of an IoT device?
A) Mobile App
B) Washing Machine
C) Smart Thermostat
D) Microsoft Word
Q3. IoT devices are primarily connected through:
A) USB cables
B) Wi-Fi, Bluetooth, Zigbee
C) CDs and DVDs
D) Fiber optics
Q4. What is the role of a sensor in IoT?
A) Store data
B) Power the system
C) Collect data from the environment
D) Display results
Q5. Which protocol is commonly used in IoT communication?
A) FTP
B) MQTT
C) SMTP
D) POP3
Q6. Real-time monitoring is a feature of:
A) E-commerce
B) Word Processors
C) Internet of Things
D) Operating Systems
Q7. In IoT, the cloud is mainly used for:
A) Data printing
B) Data storage and processing
C) Power backup
D) UI design
Q8. What is the main advantage of IoT?
A) Increases weight
B) Adds manual effort
C) Enables automation and monitoring
D) Reduces internet speed
Q9. Which of the following is NOT a communication technology in IoT?
A) Zigbee
B) Bluetooth
C) LoRaWAN
D) VHS
Q10. What type of data is collected by IoT sensors?
A) Static pages
B) Environmental or system data
C) YouTube videos
D) Printed documents
✅ Answer Key Table
| Q.No | Answer |
|---|---|
| Q1 | C |
| Q2 | C |
| Q3 | B |
| Q4 | C |
| Q5 | B |
| Q6 | C |
| Q7 | B |
| Q8 | C |
| Q9 | D |
| Q10 | B |
🧠 Explanations of All Answers
- Q1 → C: IoT stands for Internet of Things – network of connected smart devices.
- Q2 → C: Smart thermostats are IoT devices with sensors and connectivity.
- Q3 → B: IoT devices use wireless protocols like Wi-Fi, Bluetooth, Zigbee.
- Q4 → C: Sensors gather data such as temperature, motion, or light.
- Q5 → B: MQTT is a lightweight messaging protocol used in IoT.
- Q6 → C: IoT allows real-time monitoring in homes, health, and industries.
- Q7 → B: Cloud platforms store and analyze IoT data.
- Q8 → C: IoT automates tasks and provides remote monitoring features.
- Q9 → D: VHS is outdated tape tech, not used in IoT.
- Q10 → B: IoT sensors collect environmental/system-based real-time data.
🎯 Why This Practice Matters for ECET 2026
IoT is a hot topic in modern computing, and ECET examiners love asking about it. Questions from this topic are usually simple and concept-based, making them a perfect opportunity for students to score full marks. Practicing these MCQs with explanations ensures that you’ll be ready not just for exams but also for interviews and real-world understanding of smart technologies.
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