DBS-C01 Management and Operations Practice Question
This DBS-C01 practice question tests your understanding of management and operations. Read the scenario carefully and evaluate each option against the stated constraints before committing to an answer. 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 uses Amazon DynamoDB for a gaming application. During a new game launch, the table experiences throttling on write requests. The table has a provisioned capacity of 10,000 WCU and 5,000 RCU. The write traffic pattern shows spikes up to 15,000 WCU for 5 minutes. Which action would resolve the throttling with minimal cost impact?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Enable Auto Scaling for DynamoDB with a target utilization of 70%
Option D is correct because DynamoDB Auto Scaling can handle the spikes by scaling up and down, reducing costs. Option A is wrong because doubling WCU would be costly and unnecessary. Option B is wrong because DynamoDB Accelerator (DAX) is for read performance, not writes. Option C is wrong because SQS would add latency and complexity.
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.
✗
Use Amazon SQS to buffer the write requests
Why it's wrong here
This adds complexity and may not meet real-time requirements.
✗
Increase the provisioned WCU to 20,000 permanently
Why it's wrong here
This increases cost unnecessarily during low traffic periods.
✓
Enable Auto Scaling for DynamoDB with a target utilization of 70%
Why this is correct
Auto Scaling adjusts capacity automatically based on traffic.
Related concept
Static NAT maps one inside address to one outside address.
✗
Enable DynamoDB Accelerator (DAX) for the table
Why it's wrong here
DAX improves read performance, not write capacity.
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 startup's cloud architect reviews their monthly bill and notices costs are higher than expected for a long-running batch job. Switching from on-demand instances to Reserved Instances — or using Spot/Preemptible VMs — can reduce compute costs by up to 72 %. Questions like this test whether you understand the tradeoffs between commitment, flexibility, and cost across cloud pricing models.
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.
Management and Operations — This question tests Management and Operations — Static NAT maps one inside address to one outside address..
What is the correct answer to this question?
The correct answer is: Enable Auto Scaling for DynamoDB with a target utilization of 70% — Option D is correct because DynamoDB Auto Scaling can handle the spikes by scaling up and down, reducing costs. Option A is wrong because doubling WCU would be costly and unnecessary. Option B is wrong because DynamoDB Accelerator (DAX) is for read performance, not writes. Option C is wrong because SQS would add latency and complexity.
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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