Question: In a network sharing scenario, as per 3GPP specifications, which of the following can be shared, while ensuring transparency to the user?
Option 1: Only Core Network entities not connected to Radio Access Network
Option 2: Either Radio Access Network (RAN) only, or Core Network entities not connected to RAN
Option 3: Both RAN and Core Network entities, but with uniform mobility management rules for all subscribers
Option 4: Both (i) Radio Access Network (RAN) only; and (ii) RAN and Core Network entities connected to RAN, with support for differentiated service capabilities based on the home Public Land Mobile Network (PLMN)
Explanation: The correct answer is Option 4 because it accurately reflects the specifications' requirements for network sharing transparency to users. It correctly identifies that both RAN alone and RAN with connected Core Network entities can be shared. Additionally, it highlights support for differentiated service capabilities based on the subscriber's home PLMN, crucial for tailored services in shared networks.