IoT Interview Questions and Answers

Introduction
The Internet of Things (IoT) continues to revolutionize various industries, the demand for skilled professionals in this field is on the rise. If you’re a fresher looking to kickstart your career in IoT, it’s essential to be well-prepared for interviews. To help you out, we’ve compiled a list of the top IoT interview questions and answers.

Q1. What is IoT?
Ans: IoT refers to a network of interconnected devices that communicate and exchange data over the internet. These devices can range from everyday objects like smartphones and wearable devices to industrial machines and sensors.

Q2. How does IoT work?
Ans: IoT devices collect data through sensors and transmit it to a central system or cloud server via the internet. This data is then processed and analyzed to extract meaningful insights or trigger actions.

Q3. What are some common applications of IoT?
Ans: IoT finds applications in various domains, including smart homes, healthcare, agriculture, industrial automation, and smart cities. Examples include home automation systems, wearable health monitors, precision agriculture solutions, and traffic management systems.

Q4. What are the key components of an IoT system?
Ans: An IoT system consists of three main components: sensors/devices, connectivity, and data processing. Sensors/devices collect data, connectivity enables communication between devices and the cloud, and data processing involves analyzing and deriving insights from the collected data.

Q5. What are the different communication protocols used in IoT?
Ans: Common communication protocols used in IoT include MQTT, HTTP, CoAP, and AMQP. These protocols facilitate efficient data exchange between IoT devices and cloud servers.

Q6. What is MQTT?
Ans: MQTT (Message Queuing Telemetry Transport) is a lightweight messaging protocol designed for IoT applications. It enables efficient communication between IoT devices and servers, making it ideal for low-bandwidth, high-latency networks.

Q7. What is edge computing in IoT?
Ans: Edge computing involves processing data locally on IoT devices or gateways, rather than sending it to a central cloud server for processing. This helps reduce latency, minimize bandwidth usage, and enhance real-time decision-making in IoT applications.