You have an existing Azure IoT hub. You need to connect physical IoT devices to the IoT hub. You are connecting the devices through a firewall that allows only port 443 and port 80.
Which three communication protocols can you use? Each correct answer presents a complete solution. NOTE: Each correct selection is worth one point.
A . MQTT over WebSocket
B . AMQP
C . AMQP over WebSocket
D . MQTT
E . HTTPS
Answer: ACE