- A
Use Amazon Athena to query the logs directly in S3.
Why wrong: Athena charges per scan; scanning large volumes of logs for specific IPs can be expensive.
- B
Use Amazon S3 Select to retrieve only the relevant log entries based on the IP address and time range.
S3 Select filters server-side and only returns matching data, minimizing data transfer and cost.
- C
Stream the logs to Amazon OpenSearch Service for real-time querying.
Why wrong: OpenSearch requires ongoing ingestion and storage costs, which may be high for all logs.
- D
Use AWS Glue to catalog the logs and query with Amazon Redshift Spectrum.
Why wrong: Redshift Spectrum still scans data; Glue adds overhead.
Question 860 of 1,746
SAP-C02 Practice Question: Design Solutions for Organizational Complexity
This SAP-C02 practice question tests your understanding of design solutions for organizational complexity. Match the stated requirement to the specific cloud service, access model, or configuration option — many options are valid in isolation but not for this scenario. 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 has a central logging account that receives VPC Flow Logs, CloudTrail logs, and DNS logs from all accounts in AWS Organizations. The logs are stored in Amazon S3. The security team needs to query these logs for specific IP addresses and time ranges. Which solution is MOST cost-effective and scalable?
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Use Amazon S3 Select to retrieve only the relevant log entries based on the IP address and time range.
Amazon S3 Select allows you to retrieve only a subset of data from an object using SQL expressions, making it highly cost-effective for scanning large log files for specific IP addresses and time ranges. It reduces the amount of data transferred and processed compared to reading the entire object, and it scales automatically without provisioning any infrastructure. This approach is ideal for ad-hoc queries on structured or semi-structured log data stored in S3.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
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 Athena to query the logs directly in S3.
Why it's wrong here
Athena charges per scan; scanning large volumes of logs for specific IPs can be expensive.
- ✓
Use Amazon S3 Select to retrieve only the relevant log entries based on the IP address and time range.
Why this is correct
S3 Select filters server-side and only returns matching data, minimizing data transfer and cost.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
Stream the logs to Amazon OpenSearch Service for real-time querying.
Why it's wrong here
OpenSearch requires ongoing ingestion and storage costs, which may be high for all logs.
- ✗
Use AWS Glue to catalog the logs and query with Amazon Redshift Spectrum.
Why it's wrong here
Redshift Spectrum still scans data; Glue adds overhead.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates often assume Athena is the default choice for querying S3 logs, overlooking that S3 Select is more cost-effective for simple, selective row retrieval from individual objects without the need for a full SQL engine or schema-on-read overhead.
Detailed technical explanation
How to think about this question
S3 Select works by pushing down the SQL predicate (e.g., WHERE source_ip = 'x' AND timestamp BETWEEN 'y' AND 'z') to the S3 server side, which decompresses and filters the object in memory, returning only matching rows. This reduces network transfer and client-side processing, and is particularly effective for CSV, JSON, or Parquet files. In a real-world scenario, if logs are partitioned by date in S3, S3 Select can be combined with object prefix filtering to further limit the scope of each request.
KKey Concepts to Remember
- Read the scenario before looking for a memorised answer.
- Find the constraint that changes the correct option.
- Eliminate answers that are true in general but not in this case.
TExam Day Tips
- Watch for words such as best, first, most likely and least administrative effort.
- Review why wrong options are wrong, not only why the correct option is correct.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
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.
Visual reference
Quick reference
AWS S3 Storage Class Comparison
| Storage Class | Min Duration | Retrieval | Use Case |
|---|---|---|---|
| S3 Standard | None | Immediate | Frequently accessed data |
| S3 Standard-IA | 30 days | Immediate | Infrequent access, rapid retrieval |
| S3 One Zone-IA | 30 days | Immediate | Non-critical infrequent data |
| S3 Intelligent-Tiering | None | Immediate–hours | Unknown or changing access patterns |
| S3 Glacier Instant | 90 days | Milliseconds | Archive with instant retrieval |
| S3 Glacier Flexible | 90 days | Minutes–hours | Archive, flexible retrieval |
| S3 Glacier Deep Archive | 180 days | Hours | Long-term compliance archive |
What to study next
Got this wrong? Here's your next step.
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Design Solutions for Organizational Complexity — study guide chapter
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FAQ
Questions learners often ask
What does this SAP-C02 question test?
Design Solutions for Organizational Complexity — This question tests Design Solutions for Organizational Complexity — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Use Amazon S3 Select to retrieve only the relevant log entries based on the IP address and time range. — Amazon S3 Select allows you to retrieve only a subset of data from an object using SQL expressions, making it highly cost-effective for scanning large log files for specific IP addresses and time ranges. It reduces the amount of data transferred and processed compared to reading the entire object, and it scales automatically without provisioning any infrastructure. This approach is ideal for ad-hoc queries on structured or semi-structured log data stored in S3.
What should I do if I get this SAP-C02 question wrong?
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
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Last reviewed: Jun 24, 2026
This SAP-C02 practice question is part of Courseiva's free Amazon Web Services certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the SAP-C02 exam.
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