Question: What type of mobility is supported between NB-IoT and WB-EUTRAN/UTRAN/GERAN networks?
Option 1: Inter-RAT idle mode mobility
Option 2: Intra-RAT handover
Option 3: Inter-RAT active mode mobility
Option 4: Intra-RAT cell reselection
Explanation: Inter-RAT idle mode mobility is supported between NB-IoT and WB-EUTRAN/UTRAN/GERAN networks, which allows the UE to perform a Tracking Area Update (TAU) or Routing Area Update (RAU) procedure when moving between these networks.