A Wi-Fi enabled weight scale is an example of what kind of health IoT device?
Correct Answer: C
Health IoT Device Categories:
Wearable:Devices worn on the body (smartwatches, fitness trackers).
Non-wearable:Devices used without being worn (smart scales, connected medical equipment).
Implantable:Surgically inserted devices (pacemakers, glucose monitors).
References
Health IoT:Resources on healthcare + IoT will illustrate device types.
What is most often used to track livestock on large farms and identify each animal Individually?
Correct Answer: B
RFID for Livestock:Radio Frequency Identification (RFID) tags are the most widely used technology for livestock tracking and individual identification on large farms.
Benefits:
Unique ID:Each RFID tag has a unique code.
Data Storage:Some tags store information about the animal.
Durability:Tags withstand outdoor conditions.
Automated Reading:Tags can be scanned quickly.
References
RFID (General):https://en.wikipedia.org/wiki/Radio-frequency_identification
What is the typical range of a wireless body area network (WBAN)?
Correct Answer: A
WBAN Range:Wireless Body Area Networks (WBANs) specialize in short-range communication around the human body. Typical ranges fall within 1-2 meters.
Purpose:This range is designed to:
Connect sensors monitoring health metrics.
Transmit data to a central coordinator device (e.g., smartphone).
Minimize interference potential with other wireless networks.
References
WBAN Overview:https://en.wikipedia.org/wiki/Body_area_network
WBAN Research Paper (Check Range Discussion):https://www.mdpi.com/2224-2708/11/4/67
How does OFDMA differ from OFDM?
Correct Answer: C
OFDM vs. OFDMA:
OFDM (Orthogonal Frequency-Division Multiplexing):Divides a channel into multiple subcarriers for data transmission.
OFDMA (Orthogonal Frequency-Division Multiple Access):Extends OFDM by allowing multiple users to share subcarriers simultaneously, improving efficiency and spectral utilization.
References
OFDM:https://en.wikipedia.org/wiki/Orthogonal_frequency-division_multiplexing
OFDMA:https://en.wikipedia.org/wiki/Orthogonal_frequency-division_multiple_access





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