A fitness wearable manufacturer is designing a new smartwatch that must sync data with a smartphone over short distances (less than 10 meters). The device must consume very low power and support occasional large data transfers (e.g., firmware updates). The design team is considering IEEE 802.15.1 (Bluetooth). Which characteristic of 802.15.1 makes it the most suitable choice for this application?

It supports long-range communication over several kilometers, ideal for outdoor fitness tracking.

It provides deterministic latency guarantees for time-critical industrial control.

It operates in the sub-1 GHz band, avoiding interference from Wi-Fi.

It provides low-power, short-range communication with sufficient bandwidth for periodic syncs and occasional large transfers.

EC-CouncilIoT Security Essentials

Domain 1Objective 4

IEEE IoT Standards 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 44 practice questions to prepare you well beyond it. (estimate)

44questions here

9free pages

15concepts

Questions 41–44

41application · medium
A fitness wearable manufacturer is designing a new smartwatch that must sync data with a smartphone over short distances (less than 10 meters). The device must consume very low power and support occasional large data transfers (e.g., firmware updates). The design team is considering IEEE 802.15.1 (Bluetooth). Which characteristic of 802.15.1 makes it the most suitable choice for this application?
Select an answer first
42foundation · easy
Which IEEE 802.15.4 amendment is designed for smart utility networks (SUN) and supports long-range, low-power communication?
Select an answer first
43foundation · easy
Which IEEE standard defines the physical (PHY) and medium access control (MAC) layers for low-rate wireless personal area networks (LR-WPANs), commonly used in low-power IoT devices?
Select an answer first
44application · medium
A large retail store is deploying thousands of IoT devices, including price tags, inventory trackers, and environmental sensors, all connected to Wi-Fi. The store's existing Wi-Fi network is congested, and the IT team wants to upgrade to a standard that can handle a high density of devices while improving power efficiency for battery-operated devices. Which IEEE 802.11 amendment should they choose?
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IEEE IoT Standards ISE Practice Questions (Page 9)

Questions 41–44

Which IEEE 802.15.4 amendment is designed for smart utility networks (SUN) and supports long-range, low-power communication?

Which IEEE standard defines the physical (PHY) and medium access control (MAC) layers for low-rate wireless personal area networks (LR-WPANs), commonly used in low-power IoT devices?

Keep studying — IoT Fundamentals and Networking