A smart-building vendor is deploying hundreds of battery-powered door/window sensors that send a few bytes of status data only when a state change occurs. The sensors must sleep most of the time and wake briefly to transmit. The integrator needs a lightweight application-layer protocol that supports asynchronous, event-driven delivery with minimal overhead and does not require the sensor to maintain a persistent connection. Which protocol should the integrator choose?

MQTT-SN with QoS 0 and a clean session

MQTT with QoS 0 and a persistent session

A security architect is designing a secure communication channel for a fleet of drones that send video feeds to a ground control station. The drones have limited processing power, and the video feed is latency-sensitive. The architect needs to ensure confidentiality and integrity of the video data while minimizing latency. Which approach is most appropriate?

Use UDP with DTLS and a lightweight encryption algorithm like AES-CCM

Use TCP with TLS and a strong encryption algorithm like AES-256-GCM

Use UDP with a custom encryption scheme

A smart-home integrator is connecting devices from different manufacturers to a single hub. Some devices use Zigbee, others use Z-Wave, and a few use Wi-Fi. The integrator wants to control all devices through a single app. What is the most effective way to achieve interoperability?

Deploy separate bridges for each protocol and use a common application-layer protocol like MQTT

Use a cloud-based service that only supports one protocol

Use a proprietary hub that only supports one protocol

Require all devices to use the same wireless technology

EC-CouncilIoT Security Essentials

Domain 1Objective 2

IoT Networking and Communication Concepts ISE Practice Questions (Page 3)

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 11–15

11application · medium
A smart-building vendor is deploying hundreds of battery-powered door/window sensors that send a few bytes of status data only when a state change occurs. The sensors must sleep most of the time and wake briefly to transmit. The integrator needs a lightweight application-layer protocol that supports asynchronous, event-driven delivery with minimal overhead and does not require the sensor to maintain a persistent connection. Which protocol should the integrator choose?
Select an answer first
12application · medium
A logistics company is deploying temperature sensors in refrigerated trucks. The sensors send a reading every 5 minutes over a cellular connection. The company needs to ensure that no reading is lost, even if the network is temporarily unavailable. Which transport-layer protocol and application-layer protocol should be used?
Select an answer first
13expert · hard
A security architect is designing a secure communication channel for a fleet of drones that send video feeds to a ground control station. The drones have limited processing power, and the video feed is latency-sensitive. The architect needs to ensure confidentiality and integrity of the video data while minimizing latency. Which approach is most appropriate?
Select an answer first
14application · medium
A smart-home integrator is connecting devices from different manufacturers to a single hub. Some devices use Zigbee, others use Z-Wave, and a few use Wi-Fi. The integrator wants to control all devices through a single app. What is the most effective way to achieve interoperability?
Select an answer first
15foundation · easy
Which IoT communication model is characterized by a direct, dedicated connection between exactly two devices, often used for point-to-point links?
Select an answer first

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IoT Networking and Communication Concepts ISE Practice Questions (Page 3)

Questions 11–15

A smart-home integrator is connecting devices from different manufacturers to a single hub. Some devices use Zigbee, others use Z-Wave, and a few use Wi-Fi. The integrator wants to control all devices through a single app. What is the most effective way to achieve interoperability?

Which IoT communication model is characterized by a direct, dedicated connection between exactly two devices, often used for point-to-point links?

Keep studying — IoT Fundamentals and Networking