DBS-C01 Management and Operations Practice Question
This DBS-C01 practice question tests your understanding of management and operations. 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 using Amazon ElastiCache for Redis as a caching layer in front of an Amazon Aurora MySQL database. The application is experiencing higher latency than expected. Which database design pattern should the specialist recommend to improve read performance?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Use Aurora Replicas to offload read traffic from the primary instance.
Option B is correct. Adding Aurora Replicas to distribute read traffic improves read performance and reduces load on the primary. Option A is wrong because DAX is for DynamoDB, not Aurora. Option C is wrong because increasing cache size may not help if cache misses are not the issue. Option D is wrong because read replicas in ElastiCache are already used; the issue is the database.
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 ElastiCache cluster size to accommodate more data.
Why it's wrong here
Cache size may not address latency from database reads.
✗
Enable Multi-AZ on the ElastiCache cluster and use read replicas.
Why it's wrong here
ElastiCache already provides replicas; the bottleneck is likely the database.
✓
Use Aurora Replicas to offload read traffic from the primary instance.
Why this is correct
Aurora Replicas can handle read queries and reduce latency.
Related concept
Static NAT maps one inside address to one outside address.
✗
Implement Amazon DynamoDB Accelerator (DAX) in front of Aurora.
Why it's wrong here
DAX is for DynamoDB, not Aurora.
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.
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: Use Aurora Replicas to offload read traffic from the primary instance. — Option B is correct. Adding Aurora Replicas to distribute read traffic improves read performance and reduces load on the primary. Option A is wrong because DAX is for DynamoDB, not Aurora. Option C is wrong because increasing cache size may not help if cache misses are not the issue. Option D is wrong because read replicas in ElastiCache are already used; the issue is the database.
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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