- A
Attach a resource-based policy to the S3 bucket that grants the source account's Flow Logs service permission to write.
The bucket policy must allow cross-account writes.
- B
Configure the Flow Logs destination as a CloudWatch Logs log group in the source account.
Why wrong: The question specifies publishing to S3, not CloudWatch.
- C
Create an IAM role in the source account with a trust policy that allows the Flow Logs service to assume it and grants s3:PutObject to the destination bucket.
This role is necessary for cross-account delivery.
- D
Create an IAM user in the source account with programmatic access and share the access keys.
Why wrong: Using programmatic access keys is not a recommended practice for service-to-service permissions.
- E
Enable S3 cross-account replication.
Why wrong: Replication is for copying objects after they are written, not for the initial delivery.
Quick Answer
The answer is creating an IAM role in the source account with a trust policy that allows the VPC Flow Logs service to assume it and grants s3:PutObject to the destination bucket, combined with an S3 bucket policy on the destination account that explicitly permits the source account’s role to write logs. This two-step configuration is required because cross-account VPC Flow Logs rely on IAM roles to delegate permissions across accounts—the source account’s Flow Logs service must assume a role that has write access to the destination S3 bucket, while the bucket’s resource-based policy must accept that cross-account write request. On the ANS-C01 exam, this scenario tests your understanding of the IAM trust policy versus bucket policy distinction; a common trap is forgetting that the S3 bucket policy must explicitly allow the source account’s role ARN, not just the source account ID. Memory tip: think “Role to Write, Bucket to Accept”—the role grants the action, the bucket policy grants the permission.
ANS-C01 Network Management and Operations Practice Question
This ANS-C01 practice question tests your understanding of network management and operations. 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.
Which TWO configuration steps are required to enable VPC Flow Logs to be published to an S3 bucket in a different AWS account? (Select TWO.)
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
Attach a resource-based policy to the S3 bucket that grants the source account's Flow Logs service permission to write.
For cross-account flow logs, you need an IAM role in the source account that the Flow Logs service can assume, and that role must have permissions to write to the destination bucket. Additionally, the S3 bucket policy must grant the source account (or the role) the necessary permissions.
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.
- ✓
Attach a resource-based policy to the S3 bucket that grants the source account's Flow Logs service permission to write.
Why this is correct
The bucket policy must allow cross-account writes.
Related concept
Static NAT maps one inside address to one outside address.
- ✗
Configure the Flow Logs destination as a CloudWatch Logs log group in the source account.
Why it's wrong here
The question specifies publishing to S3, not CloudWatch.
- ✓
Create an IAM role in the source account with a trust policy that allows the Flow Logs service to assume it and grants s3:PutObject to the destination bucket.
Why this is correct
This role is necessary for cross-account delivery.
Related concept
Static NAT maps one inside address to one outside address.
- ✗
Create an IAM user in the source account with programmatic access and share the access keys.
Why it's wrong here
Using programmatic access keys is not a recommended practice for service-to-service permissions.
- ✗
Enable S3 cross-account replication.
Why it's wrong here
Replication is for copying objects after they are written, not for the initial delivery.
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 ANS-C01 NAT questions on configuration and troubleshooting.
- →
Network Management and Operations — study guide chapter
Learn the concepts, then practise the questions
- →
Network Management and Operations practice questions
Targeted practice on this topic area only
- →
All ANS-C01 questions
1,705 questions across all exam domains
- →
AWS Certified Advanced Networking Specialty ANS-C01 study guide
Full concept coverage aligned to exam objectives
- →
ANS-C01 practice test guide
How to use practice tests most effectively before exam day
Related practice questions
Related ANS-C01 practice-question pages
Use these pages to review the topic behind this question. This is how one missed question becomes focused revision.
Network Management and Operations practice questions
Practise ANS-C01 questions linked to Network Management and Operations.
Network Security, Compliance and Governance practice questions
Practise ANS-C01 questions linked to Network Security, Compliance and Governance.
Network Design practice questions
Practise ANS-C01 questions linked to Network Design.
Network Implementation practice questions
Practise ANS-C01 questions linked to Network Implementation.
ANS-C01 fundamentals practice questions
Practise ANS-C01 questions linked to ANS-C01 fundamentals.
ANS-C01 scenario practice questions
Practise ANS-C01 questions linked to ANS-C01 scenario.
ANS-C01 troubleshooting practice questions
Practise ANS-C01 questions linked to ANS-C01 troubleshooting.
Practice this exam
Start a free ANS-C01 practice session
Short sessions build daily habit. Longer sessions build exam-day stamina. Try a timed session to simulate real conditions.
FAQ
Questions learners often ask
What does this ANS-C01 question test?
Network Management and Operations — This question tests Network 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: Attach a resource-based policy to the S3 bucket that grants the source account's Flow Logs service permission to write. — For cross-account flow logs, you need an IAM role in the source account that the Flow Logs service can assume, and that role must have permissions to write to the destination bucket. Additionally, the S3 bucket policy must grant the source account (or the role) the necessary permissions.
What should I do if I get this ANS-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 ANS-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.
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 →
Last reviewed: Jun 20, 2026
This ANS-C01 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 ANS-C01 exam.
Question Discussion
Share a tip, memory trick, or ask about the reasoning behind this question. Do not post real exam questions, leaked content, braindumps, or copyrighted exam material. Comments are moderated and may be removed without notice.
Sign in to join the discussion.