What is the significance of using low-power wide-area networks (LPWANs) in IoT?

Question

Options

• AThey enable high-speed internet access.
• BThey are primarily used for gaming applications.
• CThey enhance the graphical interface of IoT
• DThey facilitate long-range communication at low

• A
  2% (1)
• B
  2% (1)
• C
  7% (3)
• D
  89% (40)

Explanation

Option D is correct because LPWANs (like LoRa, Sigfox, and NB-IoT) are specifically engineered to transmit small data packets over distances of several kilometers while consuming minimal battery power - making them ideal for IoT sensors, smart meters, and asset trackers that need years of battery life across wide geographic areas.

Why the distractors are wrong:

• A is wrong because LPWANs sacrifice speed for range and efficiency; high-speed internet is the domain of Wi-Fi, 5G, or fiber.
• B is wrong because gaming demands high bandwidth and low latency - the opposite of what LPWANs offer.
• C is wrong because LPWANs are a connectivity protocol, not a display or UI technology; they have no role in graphical interfaces.

Memory tip: Think of the acronym itself - Low-Power Wide-Area - the name literally describes the answer: long range (wide-area) at low energy (low-power). If the question involves LPWAN, the answer will always relate to efficient, long-distance communication.

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