Question: In a GTP-C (GPRS Tunnelling Protocol for Control plane) scenario, when applying message throttling due to overload mitigation, which type of messages should NOT be subject to throttling to prevent retransmission requests?
Option 1: All Initial Messages regardless of context
Option 2: Triggered Request Messages and their associated Responses
Option 3: Only Non-Piggybacked Initial Messages
Option 4: Triggered Request or Response Messages
Explanation: According to the principles of message throttling in GTP-C for overload mitigation, triggered request or response messages should not be throttled. This is because throttling these messages would likely result in the retransmission of the corresponding request message by the sender, potentially exacerbating network congestion. Thus, to maintain efficient communication and prevent unnecessary retransmissions, these types of messages are exempt from throttling.