SOA-C02 Networking and Content Delivery Practice Question
This SOA-C02 practice question tests your understanding of networking and content delivery. 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 has an Amazon CloudFront distribution with an S3 bucket as origin. The bucket contains sensitive data. Which configuration ensures that users access the content only through CloudFront and not directly via the S3 URL?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Configure an Origin Access Identity (OAI) in CloudFront and update the bucket policy
Option B is correct by using an Origin Access Identity (OAI) to restrict S3 bucket access to only CloudFront. Option A is wrong because blocking public access alone doesn't allow CloudFront access. Option C is wrong because CloudFront signed URLs control access to CloudFront, but the bucket still needs permission. Option D is wrong because server-side encryption doesn't restrict access paths.
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.
✗
Enable S3 server-side encryption
Why it's wrong here
Encryption does not restrict access paths.
✓
Configure an Origin Access Identity (OAI) in CloudFront and update the bucket policy
Why this is correct
OAI allows CloudFront to access the bucket while blocking direct access.
Related concept
Static NAT maps one inside address to one outside address.
✗
Use CloudFront signed URLs or signed cookies
Why it's wrong here
Signed URLs control access to CloudFront, but the bucket still needs to allow CloudFront access.
✗
Enable S3 Block Public Access on the bucket
Why it's wrong here
Block Public Access prevents all public access, including CloudFront.
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 SOA-C02 NAT questions on configuration and troubleshooting.
Networking and Content Delivery — This question tests Networking and Content Delivery — Static NAT maps one inside address to one outside address..
What is the correct answer to this question?
The correct answer is: Configure an Origin Access Identity (OAI) in CloudFront and update the bucket policy — Option B is correct by using an Origin Access Identity (OAI) to restrict S3 bucket access to only CloudFront. Option A is wrong because blocking public access alone doesn't allow CloudFront access. Option C is wrong because CloudFront signed URLs control access to CloudFront, but the bucket still needs permission. Option D is wrong because server-side encryption doesn't restrict access paths.
What should I do if I get this SOA-C02 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 SOA-C02 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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