An IoT device stores configuration parameters that must be retained when power is removed. The parameters are updated infrequently, but the device also needs a large buffer for temporary sensor data during operation. Which memory types should be used?

EEPROM for configuration parameters and SRAM for the temporary buffer

DRAM for configuration parameters and Flash for the temporary buffer

SRAM for configuration parameters and EEPROM for the temporary buffer

Flash for configuration parameters and DRAM for the temporary buffer

A manufacturer is designing a smartwatch that needs to run a lightweight UI, connect to a phone via Bluetooth, and track motion using an accelerometer. They want to minimize power consumption and physical size. Which hardware approach is most appropriate?

Use an SoC that integrates an ARM Cortex-M processor, Bluetooth radio, and sensor interfaces

Use a microcontroller with external SRAM and a separate Bluetooth module

Use an x86 processor with a full operating system

Use a separate application processor, Bluetooth module, and accelerometer connected on a PCB

What is the primary purpose of using low-power modes like sleep and deep sleep in IoT processors?

To improve wireless signal strength

To reduce the amount of memory used by the application

To extend battery life by reducing power consumption during inactivity

To increase the processing speed of the CPU

Which of the following is a typical use case for a microprocessor (as opposed to a microcontroller) in an IoT system?

A smart home hub that runs a web server and manages multiple protocols

A smart light bulb with a simple on/off switch

A battery-powered motion detector that sleeps most of the time

A simple temperature sensor that sends data once per minute

A company is designing a smart thermostat for residential use. The device must support Wi-Fi, have a color touchscreen, and run a web server for local configuration. The team is considering an ARM Cortex-A7-based SoC and an ARM Cortex-M4-based microcontroller with an external Wi-Fi module. Which factor is most important in choosing the Cortex-A7 SoC?

It provides deterministic real-time response for the thermostat control loop.

It integrates more GPIO pins, allowing direct connection of more sensors.

It has lower power consumption than the Cortex-M4, extending battery life.

It can run a full operating system, simplifying the implementation of the web server and touchscreen UI.

EC-CouncilIoT Security Essentials

Domain 2Objective 1

IoT Hardware Devices and Processors ISE Practice Questions (Page 9)

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 41–45

41application · medium
An IoT device stores configuration parameters that must be retained when power is removed. The parameters are updated infrequently, but the device also needs a large buffer for temporary sensor data during operation. Which memory types should be used?
Select an answer first
42application · medium
A manufacturer is designing a smartwatch that needs to run a lightweight UI, connect to a phone via Bluetooth, and track motion using an accelerometer. They want to minimize power consumption and physical size. Which hardware approach is most appropriate?
Select an answer first
43foundation · easy
What is the primary purpose of using low-power modes like sleep and deep sleep in IoT processors?
Select an answer first
44foundation · easy
Which of the following is a typical use case for a microprocessor (as opposed to a microcontroller) in an IoT system?
Select an answer first
45expert · hard
A company is designing a smart thermostat for residential use. The device must support Wi-Fi, have a color touchscreen, and run a web server for local configuration. The team is considering an ARM Cortex-A7-based SoC and an ARM Cortex-M4-based microcontroller with an external Wi-Fi module. Which factor is most important in choosing the Cortex-A7 SoC?
Select an answer first

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