Winjit Technologies Software Engineer Interview Questions, Process, and Tips

IoT uses various protocols such as MQTT, CoAP, HTTP, and AMQP for communication and data transfer.

• MQTT (Message Queuing Telemetry Transport) is a lightweight protocol used for IoT devices with low bandwidth and power constraints.

• CoAP (Constrained Application Protocol) is designed for resource-constrained devices and networks.

• HTTP (Hypertext Transfer Protocol) is used for web-based communication and data transfer.

• AMQP (...read more

MQTT is a lightweight messaging protocol for IoT devices.

• MQTT stands for Message Queuing Telemetry Transport

• It uses a publish-subscribe model for communication

• It is designed for low-bandwidth, high-latency networks

• It is widely used in IoT applications

• It supports Quality of Service (QoS) levels for message delivery

Modbus RTU is binary and Modbus ASCII is text-based. RTU is more efficient and commonly used.

• RTU uses binary encoding while ASCII uses text-based encoding

• RTU is more efficient and commonly used in industrial automation

• ASCII is easier to troubleshoot and can be used for long-distance communication

• RTU has a smaller message size and faster transmission speed

• ASCII has a larger message size and slower transmission speed