Question: In a 5G system utilizing satellite access, what is a key requirement for User Equipment (UE) that supports both satellite and terrestrial access when roaming between 5G satellite networks and 5G terrestrial networks?
Option 1: The UE must support optimized network selection and reselection to Public Land Mobile Networks (PLMNs) with satellite access, based on the home operator's policy.
Option 2: The UE is required to prioritize terrestrial access over satellite access for all roaming scenarios.
Option 3: Roaming between 5G satellite and terrestrial networks is only supported if the UE is registered on a specific PLMN.
Option 4: The UE must perform a manual network selection when transitioning from a satellite to a terrestrial network.
Explanation: This option is correct because, according to the requirements for a 5G system with satellite access, UEs that support satellite access must also support optimized network selection and reselection to PLMNs with satellite access. This optimization is based on the home operator's policy, ensuring seamless and efficient roaming between satellite and terrestrial networks.