Question: In UTRAN Iu interface RANAP signalling, what is the primary purpose of including both Trace Reference IE and Trigger ID IE in the CN INVOKE TRACE message?
Option 1: To authenticate the source of the trace request
Option 2: To specify the storage location for the trace records
Option 3: To facilitate the correlation and assembly of distributed trace records by the combining entity
Option 4: To define the format of the trace data being recorded
Explanation: The inclusion of both Trace Reference IE and Trigger ID IE in the CN INVOKE TRACE message enables the efficient aggregation of trace records. This facilitates the combining entity to identify, correlate, and assemble disparate parts of the total trace record for comprehensive analysis, particularly in distributed architectures.