Question: What is the typical cause indicated by a cause code with value #36 in a DEACTIVATE PDP CONTEXT REQUEST message?
Option 1: Multicast group membership time-out
Option 2: Network failure
Option 3: Regular deactivation
Option 4: Unknown error
Explanation: The cause code with value #36 typically indicates regular deactivation, which is one of the possible causes for an MBMS context deactivation initiated by the network.