Network Defense Essentials (NDE) Practice Exam

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What is the name of the 802.15.4 standard that transmits long distance data through a mesh network with low complexity?

Wi-Fi
Bluetooth
Zigbee
LoRaWAN

The correct answer is: Zigbee

The 802.15.4 standard that transmits long-distance data through a mesh network with low complexity is known as Zigbee. This protocol is specifically designed for low-power, low-data-rate applications and is widely used in Internet of Things (IoT) networks for home automation, industrial monitoring, and similar applications. Zigbee supports mesh networking, which allows devices to communicate directly with one another and extend the network range beyond the capabilities of point-to-point communication. This feature enhances reliability and coverage while maintaining low power consumption, making it suitable for scenarios where battery life is critical. In contrast, Wi-Fi is more suited for high-speed data transfer over shorter distances, Bluetooth is aimed at short-range, high-bandwidth communication, and LoRaWAN, while also capable of long-distance communication, focuses on low data rates and is not strictly based on the 802.15.4 standard. Hence, Zigbee stands out as the correct answer in the context of 802.15.4 mesh networking for low-complexity applications.