Which of the following is the best technology to build a small network that connects multiple devices simultaneously for home automation? (Wentz QOTD)
A. Zigbee
B. Li-Fi
C. Bluetooth
D. 802.1X

Kindly be reminded that the suggested answer is for your reference only. It doesn’t matter whether you have the right or wrong answer. What really matters is your reasoning process and justifications.

My suggested answer is A. Zigbee.

Wentz’s book, The Effective CISSP: Security and Risk Management, helps CISSP and CISM aspirants build a solid conceptual security model. It is a tutorial for information security and a supplement to the official study guides for the CISSP and CISM exams and an informative reference for security professionals.

Bluetooth has two versions: Bluetooth Low Energy (LE) and Bluetooth Classic. Both Zigbee and Bluetooth Low Energy (LE) support mesh topology that connects multiple devices simultaneously for home automation, while Bluetooth classic supports Point-to-Point communication only.

Even though Bluetooth LE has four main solution areas: audio streaming, data transfer, location services, and device networks, it’s not specifically designed for home automation. Bluetooth LE supports mesh communication and can fulfill home automation, but it’s not the best technology for home automation when compared with Zigbee.

Reference

• Zigbee v/s Bluetooth
• Zigbee vs. Bluetooth: Choosing the Right Protocol for Your IoT Application
• Bluetooth
• Zigbee
• Li-Fi
• Connectivity Standards Alliance
• Connectivity Standards Alliance (Wikipedia)
• Bluetooth Technology Overview

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以下哪項是構建同時連接多個設備以實現家庭自動化的小型網絡的最佳技術？ (Wentz QOTD)
A. Zigbee
B. Li-Fi
C. 藍牙
D. 802.1X