A security architect is designing a wireless network for a smart home system that requires low power consumption, mesh networking capabilities, and secure communication between sensors. Which wireless technology would be the BEST choice for this scenario?
Satellite
Bluetooth
Wi-Fi
Zigbee
Zigbee is the correct answer because it is specifically designed for low-power, short-range mesh networks commonly used in Internet of Things (IoT) and smart home applications. Zigbee operates in the 2.4 GHz frequency band, supports mesh networking topology, and includes security features like 128-bit AES encryption. Its low power consumption allows battery-powered devices to operate for years without replacement, making it ideal for sensor networks in smart homes.
Bluetooth, while energy efficient in its Low Energy (BLE) form, has more limited range and primarily uses a star topology rather than mesh networking (though Bluetooth Mesh is emerging).
Wi-Fi consumes significantly more power than Zigbee and is better suited for high-bandwidth applications rather than simple sensor data communication.
Satellite communication would be extremely excessive for a home automation system, requires line-of-sight to satellites, is much more expensive, and consumes too much power for sensor applications.
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