The correct diagnostic steps are to examine CloudWatch metrics for throttling and latency patterns, and to consider implementing DynamoDB Accelerator (DAX) for caching. CloudWatch metrics like ConsumedWriteCapacityUnits, ThrottledRequests, and SystemErrors directly reveal whether high latency stems from hot partitions or excessive request rates, which is critical for DynamoDB high latency troubleshooting on on-demand tables where capacity scaling is automatic. On the AWS Certified Database Specialty DBS-C01 exam, this question tests your understanding that on-demand mode eliminates manual capacity planning but does not prevent latency from uneven access patterns or read-heavy workloads—a common trap is assuming you need to increase capacity, which is irrelevant here. Instead, DAX provides microsecond-level read caching, reducing the load on the table’s partitions. Memory tip: For on-demand latency, think “CloudWatch for the cause, DAX for the pause.”
DBS-C01 Monitoring and Troubleshooting Practice Question
This DBS-C01 practice question tests your understanding of monitoring and troubleshooting. The scenario asks you to isolate a root cause — eliminate options that address a different problem before choosing. After answering, compare your reasoning against the explanation and wrong-answer breakdown below. Once you have made your selection, read the full explanation to reinforce the concept and understand why each distractor is designed to mislead on exam day.
A company is troubleshooting an Amazon DynamoDB table that is experiencing high latency. The table uses on-demand capacity. Which TWO steps should be taken to diagnose the issue?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Examine CloudWatch metrics for throttling and latency patterns
Option A is correct because CloudWatch metrics can show throttling, latency, and utilization. Option D is correct because DynamoDB Accelerator (DAX) can reduce latency if the issue is high read volume. Option B is wrong because increasing capacity is not needed for on-demand. Option C is wrong because partitions are managed automatically. Option E is wrong because disabling TTL is unrelated.
Key principle: NAT direction and interface roles matter as much as the IP address mapping. Inside/outside designation controls which traffic is translated.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
✗
Increase the provisioned read capacity
Why it's wrong here
On-demand capacity does not use provisioned settings.
✓
Examine CloudWatch metrics for throttling and latency patterns
Why this is correct
CloudWatch provides key performance metrics.
Related concept
Static NAT maps one inside address to one outside address.
✓
Consider using DynamoDB Accelerator (DAX) for caching
Why this is correct
DAX can reduce read latency.
Related concept
Static NAT maps one inside address to one outside address.
✗
Disable TTL to reduce write overhead
Why it's wrong here
TTL is not related to latency.
✗
Split the table into multiple partitions manually
Why it's wrong here
Partition management is automatic.
Common exam traps
Common exam trap: NAT rules depend on direction and matching traffic
NAT is not only about the public address. The inside/outside interface roles and the ACL or rule that matches traffic are just as important.
Detailed technical explanation
How to think about this question
NAT questions usually test address translation, overload/PAT behaviour, static mappings and whether the right traffic is being translated. Read the interface direction and address terms carefully.
KKey Concepts to Remember
Static NAT maps one inside address to one outside address.
PAT allows many inside hosts to share one public address using ports.
Inside local and inside global describe the private and translated addresses.
NAT ACLs identify traffic for translation, not always security filtering.
TExam Day Tips
→Identify inside and outside interfaces first.
→Check whether the scenario needs static NAT, dynamic NAT or PAT.
→Do not confuse NAT matching ACLs with normal packet-filtering intent.
Key takeaway
NAT direction and interface roles matter as much as the IP address mapping. Inside/outside designation controls which traffic is translated.
Real-world example
How this comes up in practice
A cloud solutions architect for a retail company is evaluating services for a new workload. The correct answer here reflects best practice for the specific scenario described — not a general cloud recommendation. NAT direction and interface roles matter as much as the IP address mapping. Inside/outside designation controls which traffic is translated. Cloud exam questions reward reading the constraint carefully: the same technology can be right or wrong depending on the use case.
What to study next
Got this wrong? Here's your next step.
Review the four NAT address types (inside local, inside global, outside local, outside global), PAT port overload, and static vs dynamic NAT use cases. Then practise related DBS-C01 NAT questions on configuration and troubleshooting.
Monitoring and Troubleshooting — This question tests Monitoring and Troubleshooting — Static NAT maps one inside address to one outside address..
What is the correct answer to this question?
The correct answer is: Examine CloudWatch metrics for throttling and latency patterns — Option A is correct because CloudWatch metrics can show throttling, latency, and utilization. Option D is correct because DynamoDB Accelerator (DAX) can reduce latency if the issue is high read volume. Option B is wrong because increasing capacity is not needed for on-demand. Option C is wrong because partitions are managed automatically. Option E is wrong because disabling TTL is unrelated.
What should I do if I get this DBS-C01 question wrong?
Review the four NAT address types (inside local, inside global, outside local, outside global), PAT port overload, and static vs dynamic NAT use cases. Then practise related DBS-C01 NAT questions on configuration and troubleshooting.
What is the key concept behind this question?
Static NAT maps one inside address to one outside address.
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Question Discussion
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