CCIE Data Center (legacy) — Question 4

Which option is a commonly used network layer protocol in an IoT environment?

Answer options

• A. XMPP
• B. AQMP
• C. CoAP
• D. RPL
• E. MQTT

Correct answer: C

Explanation

CoAP is designed specifically for use in IoT environments, making it the correct choice. While XMPP, AQMP, RPL, and MQTT have their applications, they do not primarily serve as network layer protocols tailored for IoT communication like CoAP does.