Question: Which type of SCCP (Signaling Connection Control Part) service is utilized for the Gs interface in the context of SGSN-VLR communication, as per ITU-T Recommendation Q.711?
Option 1: Connection-Oriented Class 1
Option 2: Connectionless Class 0
Option 3: Connection-Oriented Class 2
Option 4: Connection-Oriented Class 3
Explanation: According to the principles outlined in ITU-T Recommendation Q.711, specifically relevant clauses indicate that no SCCP connection-oriented services are utilized for this interface. Instead, the emphasis is on using only connectionless class 0, highlighting the preference for a non-connection oriented approach to manage signaling efficiently between SGSN and VLR nodes in GPRS networks. This aligns with the need for flexible and rapid signaling in mobile network architectures.