Question: In the process of delivering a terminated Short Message (SMS), what is the primary role of the SMS-GMSC after interrogating the HLR for routing information?
Option 1: To forward the short message directly to the receiving User Equipment (UE) without transiting other networks.
Option 2: To send the short message to the relevant Mobile Switching Center (MSC) or Serving GPRS Support Node (SGSN) for final delivery to the MS, potentially transiting other networks and an SMS Router if deployed.
Option 3: To store the short message temporarily until the receiving MS becomes available.
Option 4: To authenticate the sender's SC before proceeding with the message routing.
Explanation: The SMS-GMSC's key function is to forward the message, after obtaining HLR routing information, to either the MSC (for circuit-switched networks) or SGSN (for packet-switched networks), for delivery to the Mobile Station (MS), potentially transiting other networks and an SMS Router.