Question 334 of 1,663
DBS-C01 Monitoring and Troubleshooting Practice Question
Which TWO CloudWatch metrics should be monitored to detect storage performance issues for an Amazon RDS for MySQL instance? (Choose two.)
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
✓
WriteIOPS
Options C and E are correct. ReadIOPS and WriteIOPS measure the input/output operations per second, which directly indicate storage performance for an RDS MySQL instance. High or erratic IOPS can signal storage contention or saturation. Option A (NetworkReceiveThroughput) tracks network traffic, not storage. Option B (DatabaseConnections) reflects concurrent connections, unrelated to storage performance. Option D (CPUUtilization) measures CPU usage, which may impact overall performance but is not a direct storage metric.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
NetworkReceiveThroughput
Why it's wrong here
NetworkReceiveThroughput is about network traffic, not storage.
- ✗
DatabaseConnections
Why it's wrong here
DatabaseConnections is about connection count, not storage performance.
- ✓
WriteIOPS
Why this is correct
WriteIOPS indicates storage write performance.
- ✗
CPUUtilization
Why it's wrong here
CPUUtilization is about CPU usage, not storage.
- ✓
ReadIOPS
Why this is correct
ReadIOPS indicates storage read performance.
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Last reviewed: Jun 20, 2026
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