Question: What is the primary consequence if a PDN-GW (Packet Data Network Gateway) cannot update the Traffic Flow Template (TFT) during a dedicated bearer modification in an Evolved Packet Core (EPC) network?
Option 1: The EPC network's overall throughput will significantly decrease.
Option 2: The User Equipment (UE) will experience a brief disconnection from the network.
Option 3: The PDN-GW cannot map the service flow to the appropriate bearer, impacting users' perceived network quality.
Option 4: All existing bearers in the EPC network will be automatically terminated.
Explanation: This option correctly identifies the primary consequence of a PDN-GW being unable to update the TFT during a dedicated bearer modification. Without updating the TFT, the PDN-GW cannot properly map service flows to bearers, which directly affects how users perceive the network's performance in terms of service quality and responsiveness.