An IoT device will be deployed in a remote location with no wired power source and must operate for years on a battery. Which hardware selection criterion is most critical?

Wide operating temperature range

A developer is debugging a microcontroller-based IoT device that intermittently fails to send data over Wi-Fi. The device uses an RTOS with multiple tasks. The developer suspects a stack overflow in one of the tasks. Which memory-related action is most appropriate to diagnose the issue?

Move all task data to EEPROM to free up SRAM

Replace the RTOS with a bare-metal loop to reduce stack usage

Enable stack overflow detection in the RTOS and monitor the task stack high-water marks

Increase the size of the global heap and recompile the firmware

What is the primary role of an RTOS (Real-Time Operating System) in an IoT device?

To manage tasks and ensure they meet timing deadlines

To provide a graphical user interface for the device

To increase the clock speed of the processor

To store data permanently in flash memory

An IoT device logs sensor data to a buffer and periodically sends it to a cloud server. The device must preserve the firmware across power cycles and also store a small amount of calibration data that needs to be updated occasionally. Which memory configuration is most appropriate?

SRAM for firmware, Flash for calibration, and EEPROM for the buffer

DRAM for firmware, SRAM for calibration, and Flash for the buffer

Flash for firmware, EEPROM for calibration data, and SRAM for the runtime buffer

EEPROM for firmware, Flash for calibration, and DRAM for the buffer

EC-CouncilIoT Security Essentials

Domain 2Objective 1

IoT Hardware Devices and Processors ISE Practice Questions (Page 2)

Part of the IoT Hardware and Platforms domain, which makes up ~18% of our current practice bank. EC-Council does not publish an official question count, but from its 120-minute exam (~50–80 total, ~9–14 in this domain), expect 2–4 from this objective — we provide 48 practice questions to prepare you well beyond it. (estimate)

48questions here

10free pages

9concepts

Questions 6–10

6foundation · easy
Which low-power mode typically consumes the least amount of power in a microcontroller?
Select an answer first
7foundation · easy
An IoT device will be deployed in a remote location with no wired power source and must operate for years on a battery. Which hardware selection criterion is most critical?
Select an answer first
8expert · hard
A developer is debugging a microcontroller-based IoT device that intermittently fails to send data over Wi-Fi. The device uses an RTOS with multiple tasks. The developer suspects a stack overflow in one of the tasks. Which memory-related action is most appropriate to diagnose the issue?
Select an answer first
9foundation · easy
What is the primary role of an RTOS (Real-Time Operating System) in an IoT device?
Select an answer first
10application · medium
An IoT device logs sensor data to a buffer and periodically sends it to a cloud server. The device must preserve the firmware across power cycles and also store a small amount of calibration data that needs to be updated occasionally. Which memory configuration is most appropriate?
Select an answer first

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