Final answer:
IoT Hub indeed supports bi-directional communication, which is true. It allows devices to communicate with the cloud and the cloud to send messages to devices, enabling various IoT scenarios.
Step-by-step explanation:
The statement that IoT Hub supports communications both from the device to the cloud and from the cloud to the device is true. IoT Hub is a managed service, hosted in the cloud, that acts as a central message hub for bi-directional communication between your IoT application and the devices it manages. You can send messages to a device from your back-end application using reliable and secure device-to-cloud communication. Conversely, your devices can also send data to the back-end via cloud-to-device communication. This capability is crucial for enabling various IoT scenarios such as remote monitoring, system updating, and sending commands to devices.