DEA-C01 Amazon Redshift CloudWatch Metrics Practice Question
A data engineer needs to monitor the performance of an Amazon Redshift cluster. Which Amazon CloudWatch metric should the engineer monitor to detect disk space issues?
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
✓
PercentageDiskSpace
Option C. PercentageDiskSpace is a direct CloudWatch metric that tracks the percentage of disk space used on the Redshift cluster, making it ideal for detecting disk space issues. ReadIOPS and WriteIOPS measure I/O operations per second and are not indicators of disk space usage. NetworkThroughput measures network traffic, and CPUUtilization measures compute usage; neither relates to disk space.
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 it's wrong here
ReadIOPS measures the number of read I/O operations per second and does not track disk space usage.
- ✗
WriteIOPS
Why it's wrong here
WriteIOPS measures the number of write I/O operations per second and does not track disk space usage.
- ✓
PercentageDiskSpace
Why this is correct
PercentageDiskSpace directly measures the percentage of disk space used on the Redshift cluster, making it the correct metric for detecting disk space issues.
- ✗
NetworkThroughput
Why it's wrong here
NetworkThroughput measures network traffic in bytes per second and does not indicate disk space usage.
- ✗
CPUUtilization
Why it's wrong here
CPUUtilization measures the percentage of CPU usage and does not indicate disk space usage.
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JA
Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
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