DBS-C01 Monitoring and Troubleshooting Practice Question
Which TWO CloudWatch metrics should be monitored to determine if an Amazon Aurora MySQL DB cluster has sufficient I/O capacity?
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
ReadIOPS
The correct metrics to monitor for sufficient I/O capacity are ReadIOPS (Option A) and WriteIOPS (Option B). These metrics represent the actual number of read and write I/O operations per second. If the cluster is approaching the maximum IOPS limit of the underlying storage, increasing I/O capacity may be needed. Option C (FreeableMemory) is related to memory, not I/O. Option D (CPUUtilization) measures CPU usage, not I/O. Option E (DatabaseConnections) tracks connections, not I/O capacity.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
ReadIOPS
Why this is correct
ReadIOPS shows the number of read I/O operations per second.
- ✓
WriteIOPS
Why this is correct
WriteIOPS shows the number of write I/O operations per second.
- ✗
FreeableMemory
Why it's wrong here
FreeableMemory is a memory metric.
- ✗
CPUUtilization
Why it's wrong here
CPUUtilization does not directly indicate I/O capacity.
- ✗
DatabaseConnections
Why it's wrong here
DatabaseConnections is not an I/O metric.
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