The answer is to enable DynamoDB Accelerator (DAX) for improving read performance on frequently accessed items, along with using auto scaling and distributing write activity across partitions. DAX acts as an in-memory cache that reduces response times from milliseconds to microseconds for hot keys, directly addressing provisioned throughput limits by offloading read capacity consumption. On the AWS Certified Database Specialty DBS-C01 exam, this question tests your understanding that adaptive capacity handles uneven access patterns automatically, so manual partition splitting is never a best practice, and that Global Secondary Indexes must be explicitly created rather than assumed. A common trap is thinking you can manually split partitions or that DynamoDB indexes all attributes by default—both are false. Remember the mnemonic “DAD” for DynamoDB throughput best practices: DAX for reads, Auto Scaling for capacity, and Distribute writes across partitions.
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.
Which THREE of the following are best practices for managing Amazon DynamoDB tables with provisioned throughput?
Clue words in this question
Noticing these words before you look at the options changes how you read each choice.
Clue: "best"
Why it matters: Signals that multiple options may be partially correct. Choose the option that most directly solves the exact problem described, not the one that sounds most complete.
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Use a composite key design with a sort key to enable efficient querying.
Options B, C, and D are correct. Option A is incorrect because adaptive capacity automatically handles uneven access patterns; manual partition splitting is not possible. Option E is incorrect because DynamoDB does not maintain indexes for all attributes; GSIs must be created explicitly.
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.
✗
Create a global secondary index on every attribute to support any query pattern.
Why it's wrong here
Unnecessary indexes increase write costs and storage.
✗
Split hot partitions manually to distribute write traffic.
Why it's wrong here
DynamoDB automatically splits partitions; manual splitting is not supported.
✓
Use a composite key design with a sort key to enable efficient querying.
Why this is correct
Composite keys allow efficient range queries and data organization.
Clue confirmation
The clue word "best" in the question point toward this answer.
Related concept
Static NAT maps one inside address to one outside address.
✓
Use DynamoDB Auto Scaling to adjust read/write capacity based on traffic.
Why this is correct
Auto Scaling helps manage provisioned throughput efficiently.
Clue confirmation
The clue word "best" in the question point toward this answer.
Related concept
Static NAT maps one inside address to one outside address.
✓
Enable DynamoDB Accelerator (DAX) to improve read performance for frequently accessed items.
Why this is correct
DAX provides in-memory caching for faster reads.
Clue confirmation
The clue word "best" 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 company's IT admin needs to give a contractor read-only access to production logs without sharing account credentials. Using role-based access control (RBAC) and temporary scoped permissions — not a permanent shared password — is the correct pattern. Questions like this test whether you can apply least-privilege access across cloud identity services.
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 a composite key design with a sort key to enable efficient querying. — Options B, C, and D are correct. Option A is incorrect because adaptive capacity automatically handles uneven access patterns; manual partition splitting is not possible. Option E is incorrect because DynamoDB does not maintain indexes for all attributes; GSIs must be created explicitly.
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.
Are there clue words in this question I should notice?
Yes — watch for: "best". Signals that multiple options may be partially correct. Choose the option that most directly solves the exact problem described, not the one that sounds most complete.
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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