DBS-C01 Monitoring and Troubleshooting Practice Question
A gaming company uses Amazon DynamoDB with provisioned capacity. During a new game launch, the read activity spikes and some requests receive 'ProvisionedThroughputExceededException' errors. The operations team needs to monitor read throttling in real-time. Which CloudWatch metric should they create an alarm for?
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
✓
ReadThrottleEvents
(ReadThrottleEvents) because this metric directly counts the number of read requests that are throttled due to exceeding provisioned read capacity. Option B (ConsumedReadCapacityUnits) shows the amount of read capacity used, not throttled events. Option D (ThrottledRequests) includes both read and write throttles, so it is not specific to reads. Option A (ReadLatency) measures response time, not throttling.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
ReadLatency
Why it's wrong here
Latency can increase due to throttling but does not directly count throttled requests.
- ✗
ConsumedReadCapacityUnits
Why it's wrong here
This shows consumed capacity, not throttled events.
- ✓
ReadThrottleEvents
Why this is correct
This metric specifically counts throttled read requests.
- ✗
ThrottledRequests
Why it's wrong here
ThrottledRequests is a sum of read and write throttles; not specific to reads.
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JA
Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
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