Question: In UMTS networks, what approach is applied to the three measurement types defined for relocation preparation for outgoing inter-RNC hard handovers switching in the Core Network (CN)?
Option 1: 1 out of 2 approach - where at least one measurement must succeed.
Option 2: 3 out of 3 approach - where all measurements must succeed.
Option 3: 2 out of 3 approach - where at least two measurements must succeed.
Option 4: Majority Vote approach - a dynamic approach based on the number of measurements available.
Explanation: The correct answer is Option 3 because, in this context, relocation preparation for outgoing inter-RNC hard handovers requires at least two out of the three defined measurement types to succeed, balancing reliability and leniency in the handover process.