Question: In a 5G system, what is a characteristic of the connection between a remote User Equipment (UE) and a relay UE in terms of Radio Access Technology (RAT) and spectrum usage?
Option 1: Only 3GPP RAT using licensed bands
Option 2: Either 3GPP or non-3GPP RAT, but limited to licensed bands only
Option 3: Only non-3GPP RAT with the option for unlicensed bands
Option 4: Either 3GPP or non-3GPP RAT, with the flexibility to use both licensed and unlicensed bands
Explanation: This is correct because the 5G system's design for connectivity models explicitly supports versatility in connections between a remote UE and a relay UE. This includes the ability to utilize either 3GPP or non-3GPP Radio Access Technologies, coupled with the flexibility of operating on both licensed and unlicensed spectrum. This versatility is key for accommodating diverse deployment scenarios and ensuring robust connectivity in various environments.