Question: What is the purpose of including the Back-off timer value IE by the network in the context of NAS protocol for 5G System?
Option 1: To indicate the maximum number of retries allowed for a PDU session.
Option 2: To specify the minimum time interval before procedure retry is allowed, excluding specific 5GSM causes.
Option 3: To request a permanent rejection of the PDU session establishment.
Option 4: To notify the UE about the supported SSC modes.
Explanation: The network includes the Back-off timer value IE to specify the minimum time interval before procedure retry is allowed, but only if the 5GSM cause is not one of the specified values. This allows the UE to wait for a certain period before reattempting the procedure, preventing excessive retries and potential network congestion.