The answer is to enable DynamoDB Auto Scaling for write capacity. This solution is correct because DynamoDB Auto Scaling uses the AWS Application Auto Scaling service to dynamically adjust provisioned write capacity units based on a target utilization percentage, typically set at 70%, allowing the table to handle traffic spikes without manual intervention or throttling. On the AWS Certified Solutions Architect Professional SAP-C02 exam, this concept tests your understanding of managing DynamoDB performance under variable workloads, often appearing as a distractor against On-Demand mode, which is a separate pay-per-request model that does not involve automatic scaling of provisioned capacity. A common trap is confusing Auto Scaling with Global Tables or DAX, but remember: Auto Scaling adjusts capacity, Global Tables replicate data, and DAX caches reads. Memory tip: think "Auto Scale for Write, not On-Demand for spikes" — Auto Scaling is the cost-effective, automatic provisioned scaling solution for predictable bursts.
SAP-C02 Continuous Improvement for Existing Solutions Practice Question
This SAP-C02 practice question tests your understanding of continuous improvement for existing solutions. 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 is using Amazon DynamoDB as the primary database for a web application. The application experiences occasional throttling on writes. The company wants to implement a solution that automatically increases write capacity during traffic spikes. Which solution should they use?
Clue words in this question
Noticing these words before you look at the options changes how you read each choice.
Clue: "primary"
Why it matters: Asks for the main purpose or function, not a secondary benefit. Eliminate answers that describe side-effects or partial functions.
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Enable DynamoDB Auto Scaling for write capacity.
Option A is correct because DynamoDB Auto Scaling automatically adjusts write capacity based on utilization. Option B is wrong because Global Tables do not address throttling. Option C is wrong because DAX is a cache, not a scaling solution. Option D is wrong because On-Demand mode is not automatic scaling based on traffic patterns.
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.
✗
Switch to DynamoDB On-Demand capacity mode.
Why it's wrong here
On-Demand handles sudden spikes but is not automatic scaling based on utilization.
✗
Implement DynamoDB Accelerator (DAX) for caching.
Why it's wrong here
DAX reduces read load, not write throttling.
✗
Use DynamoDB Global Tables to distribute writes.
Why it's wrong here
Global Tables do not increase capacity in one region.
✓
Enable DynamoDB Auto Scaling for write capacity.
Why this is correct
Auto Scaling adjusts capacity based on actual utilization.
Clue confirmation
The clue word "primary" in the question point toward this answer.
Related concept
Static NAT maps one inside address to one outside address.
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 SAP-C02 NAT questions on configuration and troubleshooting.
Continuous Improvement for Existing Solutions — This question tests Continuous Improvement for Existing Solutions — Static NAT maps one inside address to one outside address..
What is the correct answer to this question?
The correct answer is: Enable DynamoDB Auto Scaling for write capacity. — Option A is correct because DynamoDB Auto Scaling automatically adjusts write capacity based on utilization. Option B is wrong because Global Tables do not address throttling. Option C is wrong because DAX is a cache, not a scaling solution. Option D is wrong because On-Demand mode is not automatic scaling based on traffic patterns.
What should I do if I get this SAP-C02 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 SAP-C02 NAT questions on configuration and troubleshooting.
Are there clue words in this question I should notice?
Yes — watch for: "primary". Asks for the main purpose or function, not a secondary benefit. Eliminate answers that describe side-effects or partial functions.
What is the key concept behind this question?
Static NAT maps one inside address to one outside address.
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