A company is building an IoT platform for industrial machines that must send telemetry to a cloud backend. The machines are behind a strict firewall that only allows outbound HTTPS (port 443) traffic. The telemetry is not highly sensitive, but the company wants to ensure that the data is not easily intercepted. The machines also need to receive commands from the cloud, but the firewall does not allow inbound connections. Which protocol and communication model should the company use?

MQTT over port 443 with TLS and a persistent outbound connection

CoAP over UDP with DTLS and a NAT traversal mechanism

HTTP with long polling over port 443

EC-CouncilIoT Security Essentials

Domain 1Objective 2

IoT Networking and Communication Concepts ISE Practice Questions (Page 9)

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 41–42

41expert · hard
A company is building an IoT platform for industrial machines that must send telemetry to a cloud backend. The machines are behind a strict firewall that only allows outbound HTTPS (port 443) traffic. The telemetry is not highly sensitive, but the company wants to ensure that the data is not easily intercepted. The machines also need to receive commands from the cloud, but the firewall does not allow inbound connections. Which protocol and communication model should the company use?
Select an answer first
42foundation · easy
Which wireless technology is commonly used for short-range, low-power, low-data-rate applications like home automation and is based on the IEEE 802.15.4 standard?
Select an answer first

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IoT Networking and Communication Concepts ISE Practice Questions (Page 9)

Questions 41–42

Which wireless technology is commonly used for short-range, low-power, low-data-rate applications like home automation and is based on the IEEE 802.15.4 standard?

Keep studying — IoT Fundamentals and Networking