- A
AWS Config.
Why wrong: Config records resource configurations, not needed for logging.
- B
AWS CloudTrail.
CloudTrail can deliver logs to a central S3 bucket.
- C
AWS KMS customer managed key.
KMS key encrypts the S3 bucket for compliance.
- D
Amazon CloudWatch Logs.
Why wrong: Logs can go directly to S3 without CloudWatch.
- E
Amazon S3 server access logs.
Server access logs record requests to the bucket for auditing.
Question 65 of 1,750
Centralized Logging for Multiple AWS Accounts: Required Services
This DOP-C02 practice question tests your understanding of monitoring and logging. This is a configuration task: choose the command set that satisfies every stated requirement. Small differences — like 'secret' vs 'password' or 'transport input ssh' vs 'all' — change whether the answer is correct. 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 DevOps engineer is designing a centralized logging solution for 10 AWS accounts. Logs must be stored in a central S3 bucket with encryption and access logging. Which THREE services/resources are required to meet these requirements?
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
✓
AWS CloudTrail.
To meet the requirements, three services are needed: AWS CloudTrail for logging API activity across accounts and delivering logs to a central S3 bucket; AWS KMS customer managed key to encrypt the logs at rest in S3; and Amazon S3 server access logs to record requests made to the central S3 bucket for auditing. Option A (AWS Config) is not required for centralized logging; it focuses on resource configuration compliance, not log delivery. Option D (Amazon CloudWatch Logs) is not directly required for storage in S3, as CloudTrail can deliver directly to S3 without CloudWatch Logs.
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.
- ✗
AWS Config.
Why it's wrong here
Config records resource configurations, not needed for logging.
- ✓
AWS CloudTrail.
Why this is correct
CloudTrail can deliver logs to a central S3 bucket.
Related concept
Read the scenario before looking for a memorised answer.
- ✓
AWS KMS customer managed key.
Why this is correct
KMS key encrypts the S3 bucket for compliance.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
Amazon CloudWatch Logs.
Why it's wrong here
Logs can go directly to S3 without CloudWatch.
- ✓
Amazon S3 server access logs.
Why this is correct
Server access logs record requests to the bucket for auditing.
Related concept
Read the scenario before looking for a memorised answer.
Common exam traps
Common exam trap: answer the scenario, not the keyword
Many certification questions include familiar terms but test a specific constraint. Read the exact wording before choosing an answer that is generally true but wrong for this case.
Detailed technical explanation
How to think about this question
This question should be treated as a scenario, not a definition check. Identify the problem, the constraint and the best action. Then compare each option against those facts.
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.
- Use explanations to understand the rule behind the answer.
TExam Day Tips
- Underline the problem statement mentally.
- 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 media company stores terabytes of video archives that are accessed once a year for audit purposes. Moving these objects to a cold storage tier (Azure Archive, S3 Glacier, or Google Nearline) costs a fraction of hot storage. Questions like this test whether you understand storage tiers, access frequency tradeoffs, and retrieval latency requirements.
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.
Identify which DOP-C02 exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.
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Monitoring and Logging — study guide chapter
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FAQ
Questions learners often ask
What does this DOP-C02 question test?
Monitoring and Logging — This question tests Monitoring and Logging — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: AWS CloudTrail. — To meet the requirements, three services are needed: AWS CloudTrail for logging API activity across accounts and delivering logs to a central S3 bucket; AWS KMS customer managed key to encrypt the logs at rest in S3; and Amazon S3 server access logs to record requests made to the central S3 bucket for auditing. Option A (AWS Config) is not required for centralized logging; it focuses on resource configuration compliance, not log delivery. Option D (Amazon CloudWatch Logs) is not directly required for storage in S3, as CloudTrail can deliver directly to S3 without CloudWatch Logs.
What should I do if I get this DOP-C02 question wrong?
Identify which DOP-C02 exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
About these practice questions
Courseiva creates original exam-style practice questions with explanations and wrong-answer analysis. It does not publish real exam questions, exam dumps, or protected exam content. Learn why practice questions differ from exam dumps →
Same concept, more angles
3 more ways this is tested on DOP-C02
These questions test the same concept from different angles. Work through them to make sure you can recognise it however the exam phrases it.
Variation 1. A DevOps team is designing a centralized logging solution for multiple AWS accounts. The team needs to collect logs from EC2 instances, Lambda functions, and VPC Flow Logs, and store them in a central account for analysis. The solution must be cost-effective and support near real-time log aggregation. Which THREE steps should the team take? (Choose three.)
easy- A.Configure VPC Flow Logs to deliver to a Lambda function in each account, which forwards logs to the central account.
- ✓ B.Deliver logs from the central account's CloudWatch Logs to Amazon Kinesis Data Firehose, which writes to Amazon S3.
- C.Use Amazon OpenSearch Service to index and search the logs in near real time.
- ✓ D.Use Amazon Athena to query the logs stored in S3 for analysis.
- ✓ E.Use CloudWatch cross-account subscription to stream logs from source accounts to a central account's CloudWatch Logs.
Why B: Options B, D, and E are correct. CloudWatch cross-account subscription (Option E) allows streaming logs from source accounts to a central account's CloudWatch Logs for near real-time aggregation. From the central account, logs can be delivered to Amazon Kinesis Data Firehose (Option B), which buffers and writes them to Amazon S3 at low cost. Amazon Athena (Option D) can then query the S3 logs for analysis, supporting cost-effective ad-hoc queries. Option A is incorrect because VPC Flow Logs cannot be delivered directly to a Lambda function; they are delivered to CloudWatch Logs or S3. Option C (Amazon OpenSearch Service) is not one of the three required steps because the question specifies cost-effective storage and near real-time aggregation, and OpenSearch adds unnecessary cost and complexity for storage; the proposed solution uses S3 for cost-effective storage and Athena for querying.
Variation 2. A DevOps engineer needs to set up a centralized logging solution for multiple AWS accounts. The logs must be stored in a central Amazon S3 bucket for long-term retention and analysis. Which combination of services should the engineer use?
easy- A.Use AWS CloudTrail to deliver logs to the central S3 bucket.
- B.Use Amazon Athena and Amazon QuickSight to query logs across accounts.
- ✓ C.Use Amazon CloudWatch Logs and Amazon Kinesis Data Firehose to deliver logs to the central S3 bucket.
- D.Use Amazon VPC Flow Logs to send logs to the central S3 bucket.
Why C: Option C is correct because Amazon CloudWatch Logs can collect logs from various AWS services and applications. To centralize logs from multiple accounts into a single S3 bucket, you can use subscription filters to deliver log events to Amazon Kinesis Data Firehose, which then streams the data to the central S3 bucket. Alternatively, you can use CloudWatch Logs export tasks. This combination enables centralized logging. Option A is incorrect because CloudTrail only captures API activity, not application or system logs. Option B is incorrect because Athena and QuickSight are analytics services, not log ingestion services. Option D is incorrect because VPC Flow Logs capture only network traffic metadata, not all logs.
Variation 3. A DevOps engineer is setting up centralized logging for multiple AWS accounts. They need to collect VPC Flow Logs, CloudTrail logs, and application logs into a single Amazon S3 bucket. What is the most efficient approach?
medium- A.Configure a Lambda function in each account to copy logs to a central S3 bucket.
- B.Create an S3 bucket in each account and use S3 replication.
- C.Use Amazon Kinesis Data Firehose to stream logs from all accounts to a central S3 bucket.
- ✓ D.Use an S3 bucket in a centralized logging account with a bucket policy that grants write access from all other accounts.
Why D: Option D is correct because it uses a centralized logging account with a single S3 bucket configured with a bucket policy that grants write access (s3:PutObject) to all other accounts. This approach avoids data duplication, eliminates the need for replication or intermediate compute resources, and is the most efficient and cost-effective method for aggregating logs from multiple accounts into a single destination.
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Last reviewed: Jun 20, 2026
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