試題詳解

30. In the Internet of Things (IoT), what is the MQTT protocol?
(A) MQTT is a protocol for communication between IoT devices, with its main feature being the ability to provide real-time communication.
(B) MQTT is a protocol for communication between IoT devices, with its main feature being to provide efficient low-power communication.
(C) MQTT is a protocol for communication between IoT devices, with its main feature being to provide highly secure communication.
(D) MQTT is a protocol for communication between IoT devices, with its main feature being the ability to provide wide-area network communication.
(E) MQTT is a protocol for communication between IoT devices, with its main feature being to provide highly scalable communication.