Which design feature is most directly intended to improve the availability of an IoT system?

Using digital signatures to verify firmware updates

Implementing redundant power supplies and network connections

Using strong encryption for all data transmissions

Setting strict access control policies for users

Which mechanism is commonly used to detect unauthorized changes to IoT firmware or data?

Encryption and access control lists

Redundant power supplies and backup batteries

A logistics company uses IoT trackers that report package location. A malicious actor intercepts the GPS coordinates and sends false coordinates to the tracking server, making packages appear in the wrong location. Which control would BEST detect this tampering?

Using a redundant tracking server

Message authentication codes (MACs) on each location update

Encrypting the GPS coordinates in transit

Logging all access to the tracking server

Which scenario represents a threat to the availability of an IoT system?

A distributed denial-of-service (DDoS) attack overwhelms a smart home hub, making it unresponsive.

An unauthorized user gains access to a smart camera's video feed.

A sensor sends incorrect temperature readings due to a software bug.

An attacker steals the encryption keys used to secure communication between devices.

EC-CouncilIoT Security Essentials

Domain 4Objective 2

The CIA Triad ISE Practice Questions (Page 8)

Part of the IoT Threats and Basic Security domain, which makes up ~17% 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 45 practice questions to prepare you well beyond it. (estimate)

45questions here

9free pages

5concepts

Questions 36–40

36foundation · easy
Which design feature is most directly intended to improve the availability of an IoT system?
Select an answer first
37foundation · easy
Which mechanism is commonly used to detect unauthorized changes to IoT firmware or data?
Select an answer first
38application · medium
A logistics company uses IoT trackers that report package location. A malicious actor intercepts the GPS coordinates and sends false coordinates to the tracking server, making packages appear in the wrong location. Which control would BEST detect this tampering?
Select an answer first
39foundation · easy
Which scenario represents a threat to the availability of an IoT system?
Select an answer first
40application · medium
A city deploys smart streetlights that must be remotely controllable at all times. A ransomware attack encrypts the management server's configuration files, making the lights unresponsive to commands. Which CIA principle is primarily affected?
Select an answer first

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