IoT Systems Architecture and Design Questions

Covers architecture and design of distributed Internet of Things systems and connected embedded devices. Core topics include edge computing patterns, sensor and actuator network topologies, gateway and mesh network architectures, cloud integration and data pipelines, and trade offs between edge processing and cloud processing. Also includes networking protocols commonly used in constrained environments such as WiFi, Bluetooth, ZigBee, and LoRaWAN, plus connectivity strategies for unreliable networks including buffering, retries, offline operation, and data aggregation and filtering. Candidates may be evaluated on device to cloud data flow, scalability considerations from hundreds to millions of devices, performance and power trade offs on resource constrained hardware, deployment patterns for gateways and proxies, and high level fault tolerance and monitoring strategies.