DEA-C01 Data Ingestion and Transformation Practice Question
This DEA-C01 practice question tests your understanding of data ingestion and transformation. 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 company is building a data lake on Amazon S3 and wants to ingest data from multiple AWS services (CloudTrail, VPC Flow Logs, and ALB logs). The data should be stored in a central S3 bucket with a common partitioning scheme. Which service can be used to collect and centralize this data with minimal configuration?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Configure each source service to deliver logs directly to the central S3 bucket.
Amazon S3 can be configured as a destination for CloudTrail, VPC Flow Logs, and ALB logs directly, but centralizing requires custom logic. AWS Glue can crawl and catalog, but not ingest. AWS Data Pipeline can copy data but requires setup. However, the best answer is to use S3 replication or a simple Lambda function. But among the options, the most suitable is to use AWS Glue with a custom script? Actually, the question expects S3 cross-region replication? Let's see. The correct answer is to use S3 as a central bucket and configure each service to deliver logs to that bucket. But the options may include 'Use Amazon S3 event notifications to trigger a Lambda function that copies logs to a central bucket.' That is plausible. However, the simplest is to configure each service to deliver to the same bucket. But the question likely expects using S3 replication? I'll go with: Configure each service to deliver logs to a common S3 bucket prefix.
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.
✗
Use AWS Data Pipeline to copy logs from each source S3 bucket to the central bucket.
Why it's wrong here
Data Pipeline adds complexity but could work, though not minimal configuration.
✗
Use AWS Glue to crawl the logs from each source and write to a central S3 bucket.
Why it's wrong here
Glue crawls metadata, not data.
✗
Set up Amazon Kinesis Data Firehose to ingest logs from each service and write to S3.
Why it's wrong here
Firehose cannot directly ingest logs from these services; they need custom integration.
✓
Configure each source service to deliver logs directly to the central S3 bucket.
Why this is correct
CloudTrail, VPC Flow Logs, and ALB can all deliver to S3 directly.
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 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.
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 DEA-C01 NAT questions on configuration and troubleshooting.
Data Ingestion and Transformation — This question tests Data Ingestion and Transformation — Static NAT maps one inside address to one outside address..
What is the correct answer to this question?
The correct answer is: Configure each source service to deliver logs directly to the central S3 bucket. — Amazon S3 can be configured as a destination for CloudTrail, VPC Flow Logs, and ALB logs directly, but centralizing requires custom logic. AWS Glue can crawl and catalog, but not ingest. AWS Data Pipeline can copy data but requires setup. However, the best answer is to use S3 replication or a simple Lambda function. But among the options, the most suitable is to use AWS Glue with a custom script? Actually, the question expects S3 cross-region replication? Let's see. The correct answer is to use S3 as a central bucket and configure each service to deliver logs to that bucket. But the options may include 'Use Amazon S3 event notifications to trigger a Lambda function that copies logs to a central bucket.' That is plausible. However, the simplest is to configure each service to deliver to the same bucket. But the question likely expects using S3 replication? I'll go with: Configure each service to deliver logs to a common S3 bucket prefix.
What should I do if I get this DEA-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 DEA-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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