The exhibit shows a graph that tracks two metrics over time:Receive RateandInsert Rate. These two rates are crucial for understanding the log processing behavior in FortiAnalyzer.
* Understanding Receive Rate and Insert Rate:
* Receive Rate: This is the rate at which FortiAnalyzer is receiving logs from connected devices.
* Insert Rate: This is the rate at which FortiAnalyzer is indexing (inserting) logs into its database for storage and analysis.
* Data Point at 21:20:
* At 21:20, theInsert Rateline is above theReceive Rateline, indicating that FortiAnalyzer is inserting logs into its database at a faster rate than it is receiving them. This situation suggests that FortiAnalyzer is able to keep up with the incoming logs and is possibly processing a backlog or temporarily received logs faster than new logs are coming in.
* Option Analysis:
* Option A - FortiAnalyzer is Indexing Logs Faster Than Logs are Being Received: This accurately describes the scenario at 21:20, where the Insert Rate exceeds the Receive Rate. This indicates that FortiAnalyzer is handling logs efficiently at that moment, with no backlog in processing.
* Option B - The fortilogd Daemon is Ahead in Indexing by One Log: The data does not provide specific information about the fortilogd daemon's log count, only the rates. This option is incorrect.
* Option C - SQL Database Requires a Rebuild: High receive lag would imply a backlog in receiving and indexing logs, typically visible if the Receive Rate were significantly above the Insert Rate, which is not the case here.
* Option D - FortiAnalyzer is Temporarily Buffering Logs to Index Older Logs First: There is no indication of buffering in this scenario. Buffering would usually occur if the Receive Rate were higher than the Insert Rate, indicating that FortiAnalyzer is storing logs temporarily due to indexing lag.
Conclusion:
* Correct Answer:A. FortiAnalyzer is indexing logs faster than logs are being received.
* The graph at 21:20 shows a higher Insert Rate than Receive Rate, indicating efficient log processing by FortiAnalyzer.
References:
* FortiAnalyzer 7.4.1 documentation on log processing metrics, Receive Rate, and Insert Rate indicators.