Certified Ethical Hacker (CEH v11) — Question 116

George is a security professional working for iTech Solutions. He was tasked with securely transferring sensitive data of the organization between industrial systems. In this process, he used a short-range communication protocol based on the IEEE 203.15.4 standard. This protocol is used in devices that transfer data infrequently at a low rate in a restricted area, within a range of 10-100 m.
What is the short-range wireless communication technology George employed in the above scenario?

Answer options

• A. LPWAN
• B. MQTT
• C. NB-IoT
• D. Zigbee

Correct answer: D

Explanation

The correct answer is D, Zigbee, which is specifically designed for low-rate, short-range communication as described. The other options, such as LPWAN, MQTT, and NB-IoT, do not fit the criteria of a short-range protocol based on IEEE 203.15.4 and are used for different types of communications or applications.