Question: What is the primary method used to calculate the 'Number of simultaneous online watchers (Mean)' in an IMS Presence Enabler/AS?
Option 1: By summing up all individual watcher sessions at the end of a billing cycle
Option 2: Through continuous monitoring without periodic sampling
Option 3: By analyzing packet loss rates in real-time
Option 4: By taking the arithmetic mean of samples collected at pre-defined intervals
Explanation: This method reflects the approach for obtaining the mean number of simultaneous online watchers, highlighting the importance of periodic sampling and statistical analysis in network performance management to understand network utilization patterns over time.