Question: In a GSM network, what is the primary purpose of the 'Flush Requests Received' measurement from the perspective of a Base Station Controller (BSC)?
Option 1: To track the number of successful PDU transmissions to User Equipment (UE)
Option 2: To monitor the frequency of 'PAGING' messages from the Serving GPRS Support Node (SGSN)
Option 3: To count the total number of PDUs buffered for a given cell
Option 4: To measure the total number of flush request messages received from the SGSN to clear PDUs for a specific cell
Explanation: This measurement's primary purpose is to track the total number of flush request messages received from the SGSN, highlighting its importance in managing network resources and packet switching efficiency.