Question: What type of connection models will be supported by the Internet of Things (IoT) in the 5G system?
Option 1: Only direct device connections between IoT devices and the network.
Option 2: Only connections using another IoT device as a relay UE.
Option 3: Only connections using 3GPP Radio Access Technology (RAT).
Option 4: Various connectivity models, including direct connections, connections via another IoT device as a relay UE, and both types of connections using either 3GPP or non-3GPP RAT.
Explanation: The correct answer is Option 4 because the Internet of Things will support various connectivity models in the 5G system. This includes direct connections between IoT devices and the network, as well as connections via another IoT device acting as a relay UE. Additionally, both types of connections can use either 3GPP or non-3GPP Radio Access Technology (RAT), providing flexibility and versatility for different IoT deployment scenarios.