A smart-building project requires a mix of sensors and actuators. Some sensors are battery-powered and require low power, while others are mains-powered and can handle higher data rates. The building has existing Wi-Fi coverage. The design must minimize cost and complexity while ensuring reliable communication. Which network architecture is most appropriate?

Use a single star network with Wi-Fi for all devices

Use a single mesh network with Zigbee for all devices

Use a mesh network with LoRaWAN for all devices

Use a hybrid topology with Zigbee for battery-powered sensors and Wi-Fi for mains-powered devices

Which approach is commonly used to improve interoperability among diverse IoT devices and protocols?

Using proprietary protocols exclusively

Implementing gateways or middleware that translate between different protocols

Restricting devices to a single vendor

Using only Wi-Fi for all IoT devices

A network engineer is troubleshooting an IoT device that intermittently fails to send data to a server. The device uses CoAP over UDP. The engineer suspects packet loss. Which action is most appropriate to improve reliability without significantly increasing latency?

Use a different application-layer protocol like HTTP

Increase the UDP buffer size on the device

Implement CoAP retransmission with exponential backoff

EC-CouncilIoT Security Essentials

Domain 1Objective 2

IoT Networking and Communication Concepts ISE Practice Questions (Page 8)

Part of the IoT Fundamentals and Networking domain, which makes up ~15% of our current practice bank. EC-Council does not publish an official question count, but from its 120-minute exam (~50–80 total, ~8–12 in this domain), expect 2–3 from this objective — we provide 42 practice questions to prepare you well beyond it. (estimate)

42questions here

9free pages

10concepts

Questions 36–40

36foundation · easy
In IoT networking, what is the process of breaking a large data stream into smaller units called packets, each with a header containing source and destination addresses?
Select an answer first
37expert · hard
A smart-building project requires a mix of sensors and actuators. Some sensors are battery-powered and require low power, while others are mains-powered and can handle higher data rates. The building has existing Wi-Fi coverage. The design must minimize cost and complexity while ensuring reliable communication. Which network architecture is most appropriate?
Select an answer first
38foundation · easy
Which approach is commonly used to improve interoperability among diverse IoT devices and protocols?
Select an answer first
39foundation · easy
In a smart home deployment, a central hub collects data from several sensors and sends commands back to them. Each sensor communicates only with the hub, not with other sensors. Which network topology does this describe?
Select an answer first
40expert · hard
A network engineer is troubleshooting an IoT device that intermittently fails to send data to a server. The device uses CoAP over UDP. The engineer suspects packet loss. Which action is most appropriate to improve reliability without significantly increasing latency?
Select an answer first

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IoT Networking and Communication Concepts ISE Practice Questions (Page 8)

Questions 36–40

In IoT networking, what is the process of breaking a large data stream into smaller units called packets, each with a header containing source and destination addresses?

Which approach is commonly used to improve interoperability among diverse IoT devices and protocols?

In a smart home deployment, a central hub collects data from several sensors and sends commands back to them. Each sensor communicates only with the hub, not with other sensors. Which network topology does this describe?

A network engineer is troubleshooting an IoT device that intermittently fails to send data to a server. The device uses CoAP over UDP. The engineer suspects packet loss. Which action is most appropriate to improve reliability without significantly increasing latency?

Keep studying — IoT Fundamentals and Networking