CompTIA CASP+ (CAS-004) — Question 227

Which of the following communication protocols is used to create PANs with small, low-power digital radios and supports a large number of nodes?

Answer options

• A. Zigbee
• B. Wi-Fi
• C. CAN
• D. Modbus
• E. DNP3

Correct answer: A

Explanation

Zigbee is specifically designed for low-power, low-data-rate applications and supports a large number of devices in a PAN, making it the correct choice. Wi-Fi, while widely used, is not optimized for low power and has a different range and capacity. CAN, Modbus, and DNP3 are also not tailored for personal area networking and do not provide the same capabilities as Zigbee.