Question: In a GERAN/UTRAN network, what does the Rejection Cause Code object contain in response to a Location Updating Reject message, and how is it coded?
Option 1: The Rejection Cause Code contains the IMSI (International Mobile Subscriber Identity) of the rejected user
Option 2: The Rejection Cause Code contains the Reject Cause received in the Location Updating Reject message, following standard mobile radio interface Layer 3 specification coding practices
Option 3: The Rejection Cause Code contains the APN (Access Point Name) of the requested service
Option 4: The Rejection Cause Code contains the UE's (User Equipment) MAC address, as per IEEE standards
Explanation: In GERAN/UTRAN networks, when a Location Updating Reject message is sent, the Rejection Cause Code object must include the specific reason for the rejection, which is the Reject Cause. This cause is encoded in a standard format, ensuring consistency in how rejection reasons are communicated and interpreted across the network.