A temperature sensor in a cold-storage facility must notify a monitoring service when the temperature exceeds a threshold. The sensor has limited battery and should only send data when an event occurs. Which approach is most efficient?

The sensor sends a webhook POST to the monitoring service when the threshold is exceeded

The monitoring service polls the sensor every minute

The sensor sends its temperature every minute to the monitoring service

The sensor opens a WebSocket connection and keeps it open all day

A company wants to provide a web-based management interface for its IoT devices. The interface must allow administrators to view device status and update firmware. Which combination of technologies is most appropriate?

A web server with HTTPS and a REST API for status and firmware updates.

An FTP server for firmware uploads and a telnet interface for status.

A WebSocket server that only pushes status updates.

A plain HTTP web server with a simple HTML form.

A smart-building company exposes its HVAC controller to a partner dashboard. The controller has limited memory and must report temperature readings every 30 seconds. The partner dashboard expects to poll the controller over HTTP. Which RESTful API design best fits the constraint?

Use GET /readings/latest to return the most recent temperature as JSON.

Use PUT /readings/latest to update the temperature value on the device.

Use DELETE /readings/latest to clear the old temperature before sending a new one.

Use POST /readings to submit a new temperature reading to the dashboard.

EC-CouncilIoT Security Essentials

Domain 3Objective 1

Web Communications ISE Practice Questions (Page 9)

Part of the IoT Advanced Topics domain, which makes up ~13% of our current practice bank. EC-Council does not publish an official question count, but from its 120-minute exam (~50–80 total, ~7–10 in this domain), expect 2–3 from this objective — we provide 43 practice questions to prepare you well beyond it. (estimate)

43questions here

9free pages

6concepts

Questions 41–43

41application · medium
A temperature sensor in a cold-storage facility must notify a monitoring service when the temperature exceeds a threshold. The sensor has limited battery and should only send data when an event occurs. Which approach is most efficient?
Select an answer first
42application · medium
A company wants to provide a web-based management interface for its IoT devices. The interface must allow administrators to view device status and update firmware. Which combination of technologies is most appropriate?
Select an answer first
43application · medium
A smart-building company exposes its HVAC controller to a partner dashboard. The controller has limited memory and must report temperature readings every 30 seconds. The partner dashboard expects to poll the controller over HTTP. Which RESTful API design best fits the constraint?
Select an answer first

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Web Communications ISE Practice Questions (Page 9)

Questions 41–43

A temperature sensor in a cold-storage facility must notify a monitoring service when the temperature exceeds a threshold. The sensor has limited battery and should only send data when an event occurs. Which approach is most efficient?

A company wants to provide a web-based management interface for its IoT devices. The interface must allow administrators to view device status and update firmware. Which combination of technologies is most appropriate?

A smart-building company exposes its HVAC controller to a partner dashboard. The controller has limited memory and must report temperature readings every 30 seconds. The partner dashboard expects to poll the controller over HTTP. Which RESTful API design best fits the constraint?

Keep studying — IoT Advanced Topics