Question: In a CELL_DCH state, when performing measurements on GSM cells without requiring compressed mode, what is the UE's behavior regarding GSM cells in the monitored set?
Option 1: The UE measures only the strongest GSM cell in the monitored set.
Option 2: The UE searches for new GSM cells but does not measure existing ones in the monitored set.
Option 3: The UE measures GSM cells in the monitored set only during idle modes.
Option 4: The UE shall measure all GSM cells present in the monitored set, adhering to dedicated mode requirements as specified in relevant standards for radio resource management.
Explanation: This correct answer reflects the detailed requirement for UEs when not needing compressed mode for GSM measurements. Measuring all GSM cells in the monitored set ensures comprehensive radio resource management, aligning with dedicated mode specifications for optimal cellular performance and seamless network handovers.