IOT IoT Architecture and Design 3

Question 1

What is the 'Event-Driven Architecture' (EDA) pattern commonly used for in IoT systems?

Accepted Answer

Triggering automated responses to real-time IoT events asynchronously without tight coupling

Answer

Scheduling batch data processing jobs

Answer

Managing device firmware inventories

Answer

Providing synchronous API access to IoT data

Question 2

What does 'horizontal scalability' mean for an IoT platform backend?

Accepted Answer

Adding more server instances in parallel to handle increasing IoT device connections and data volume

Answer

Increasing the CPU power of a single server

Answer

Expanding the physical footprint of IoT devices

Answer

Extending the wireless range of IoT gateways

Question 3

Which IoT architecture concept describes the ability of a system to continue operating when some components fail?

Accepted Answer

Fault tolerance / Resilience

Answer

Scalability

Answer

Interoperability

Answer

Observability

Question 4

What is the purpose of a 'heartbeat' message in IoT system design?

Accepted Answer

To periodically confirm that a device is still connected and operational

Answer

To transmit sensor health data to doctors

Answer

To synchronize clocks between IoT devices

Answer

To trigger emergency alerts

Question 5

What does 'observability' mean in the context of IoT infrastructure operations?

Accepted Answer

The ability to understand the internal state of IoT systems from their external outputs (logs, metrics, traces)

Answer

The ability to physically see IoT devices in the field

Answer

Installing cameras to monitor IoT hardware

Answer

Visibility into device power consumption

Question 6

In IoT design, what is the benefit of using 'asynchronous communication' over synchronous request-response?

Accepted Answer

Devices can send data without waiting for an acknowledgment, improving throughput and resilience to temporary connectivity loss

Answer

Lower data security requirements

Answer

Simpler device programming

Answer

Lower data transmission costs