Question: What is a prerequisite for a User Equipment (UE) to support handover from E-UTRA/EPC to NR TDD FR2-2 in a telecommunications network?
Option 1: Support for RRM measurements for FR2-2 as specified in the Radio Resource Control (RRC) protocol
Option 2: Capability for inter-frequency handovers within E-UTRA
Option 3: Dual-connectivity mode with both E-UTRA and NR
Option 4: Prior successful attachment to an NR TDD FR2-2 cell
Explanation: To ensure seamless handover from E-UTRA/EPC to NR TDD FR2-2, a UE must be capable of performing the necessary Radio Resource Management (RRM) measurements for FR2-2. This capability is crucial for the UE to assess and report the target cell's conditions, facilitating a successful handover.