SOA-C02 Reliability and Business Continuity Practice Question
This SOA-C02 practice question tests your understanding of reliability and business continuity. 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.
An application uploads files to an S3 bucket. The SysOps administrator needs to ensure that the files are automatically replicated to another bucket in a different AWS Region for disaster recovery. Which action should be taken?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Enable Cross-Region Replication on the source bucket.
Option C is correct because S3 Cross-Region Replication (CRR) automatically replicates objects to a destination bucket in another region. Option A is wrong because versioning alone does not replicate data. Option B is wrong because lifecycle policies only manage storage tiers, not replication. Option D is wrong because S3 Transfer Acceleration speeds up uploads but does not replicate.
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 Cross-Region Replication on the source bucket.
Why this is correct
CRR automatically replicates objects to a specified destination bucket in a different region.
Related concept
Static NAT maps one inside address to one outside address.
✗
Use S3 Transfer Acceleration for faster uploads.
Why it's wrong here
Transfer Acceleration improves upload speed but does not replicate objects.
✗
Enable versioning on the source bucket.
Why it's wrong here
Versioning tracks object versions but does not replicate them.
✗
Configure a lifecycle policy to transition objects to Glacier.
Why it's wrong here
Lifecycle policies do not replicate data across regions.
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.
Reliability and Business Continuity — This question tests Reliability and Business Continuity — Static NAT maps one inside address to one outside address..
What is the correct answer to this question?
The correct answer is: Enable Cross-Region Replication on the source bucket. — Option C is correct because S3 Cross-Region Replication (CRR) automatically replicates objects to a destination bucket in another region. Option A is wrong because versioning alone does not replicate data. Option B is wrong because lifecycle policies only manage storage tiers, not replication. Option D is wrong because S3 Transfer Acceleration speeds up uploads but does not replicate.
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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