Question: What is the expected handling of NR UE Security Capabilities by eNBs when received from NAS signaling?
Option 1: The eNBs can modify the security capabilities based on their own configuration before storing and sending them.
Option 2: The eNBs are allowed to truncate the security capabilities for efficiency before forwarding them.
Option 3: The eNBs should discard any unknown security capabilities before storing and sending the rest.
Option 4: The eNBs must store and send the complete NR UE Security Capabilities without any modification or truncation.
Explanation: This is correct because, as per the specifications, the Security Capabilities received from NAS signaling shall not be modified or truncated when forwarded to eNBs. This ensures integrity and consistency of security configurations across the network.