Question: In E-UTRAN, how do eNBs handle the UE Security Capabilities Information Element (IE) regarding supported encryption and integrity protection algorithms?
Option 1: eNBs modify the UE's security capabilities to match their own supported algorithms before storing and sending.
Option 2: eNBs truncate the bitmap to only include commonly supported algorithms in the network before storage and transmission.
Option 3: eNBs store and send the complete bitmaps without any modification or truncation, as received from the UE.
Option 4: eNBs generate a new bitmap based on the UE's location and the prevailing security conditions in that area.
Explanation: This is correct because eNBs are required to handle the UE Security Capabilities IE in a manner that preserves its original form, maintaining accurate information about the UE's supported encryption and integrity protection algorithms for secure communication setup and management.