The correct answer is S3 Cross-Region Replication (CRR) because it automatically and asynchronously copies objects from a source S3 bucket in one AWS Region to a destination bucket in a different Region, providing a secondary geographic copy for disaster recovery. This feature requires versioning to be enabled on both buckets and, by default, replicates new objects and their metadata, with optional settings for delete markers or specific prefixes. On the AWS Certified Cloud Practitioner CLF-C02 exam, this question tests your understanding of core S3 replication features, often contrasting CRR with Same-Region Replication (SRR) or backup services like AWS Backup. A common trap is confusing CRR with SRR, which only copies data within the same Region and does not satisfy cross-Region DR requirements. Remember the memory tip: “CRR = Cross-Region Recovery” — if you need data in a different Region for DR, choose CRR.
CLF-C02 Cloud Technology and Services Practice Question
This CLF-C02 practice question tests your understanding of cloud technology and services. 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 needs to replicate their Amazon S3 data to a different AWS Region automatically to meet disaster recovery requirements. Which S3 feature enables this?
Why wrong: Intelligent-Tiering automatically moves objects between storage tiers based on access patterns — it doesn't replicate to another Region.
B
S3 Cross-Region Replication (CRR)
CRR automatically replicates new and updated objects to a destination bucket in another Region, supporting DR, compliance, and latency optimization use cases.
C
S3 Lifecycle policies
Why wrong: Lifecycle policies transition objects to cheaper storage classes or delete them after specified periods — they don't replicate to another Region.
D
S3 Transfer Acceleration
Why wrong: Transfer Acceleration speeds up uploads to a single S3 bucket using CloudFront edge locations — it doesn't replicate data to another Region.
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
S3 Cross-Region Replication (CRR)
Amazon S3 Cross-Region Replication (CRR) is the correct feature because it automatically and asynchronously replicates objects across S3 buckets in different AWS Regions, meeting disaster recovery requirements by ensuring data is available in a secondary geographic location. CRR requires versioning to be enabled on both source and destination buckets, and it replicates new objects and object metadata by default, with optional configuration for replicating delete markers or objects from specific prefixes.
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.
✗
S3 Intelligent-Tiering
Why it's wrong here
Intelligent-Tiering automatically moves objects between storage tiers based on access patterns — it doesn't replicate to another Region.
✓
S3 Cross-Region Replication (CRR)
Why this is correct
CRR automatically replicates new and updated objects to a destination bucket in another Region, supporting DR, compliance, and latency optimization use cases.
Related concept
Read the scenario before looking for a memorised answer.
✗
S3 Lifecycle policies
Why it's wrong here
Lifecycle policies transition objects to cheaper storage classes or delete them after specified periods — they don't replicate to another Region.
✗
S3 Transfer Acceleration
Why it's wrong here
Transfer Acceleration speeds up uploads to a single S3 bucket using CloudFront edge locations — it doesn't replicate data to another Region.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates often confuse S3 Lifecycle policies (which manage storage tiers) with replication features, or mistakenly think S3 Transfer Acceleration provides replication because it improves transfer speed, but neither performs automatic cross-region copying.
Detailed technical explanation
How to think about this question
CRR uses the S3 PUT Object replication API to asynchronously copy objects, with replication time typically within 15 minutes for most objects, though it can be slower for large objects or high-volume workloads. Under the hood, CRR relies on S3 event notifications and a replication queue managed by AWS, and it supports replication of objects encrypted with SSE-S3 or SSE-KMS (with proper KMS key permissions). A subtle behavior is that CRR does not replicate objects that existed before the replication rule was enabled unless you use S3 Batch Replication to backfill them.
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.
TExam Day Tips
→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.
Related glossary terms
Concepts from this question explained
These glossary pages explain the core terms tested in this CLF-C02 question in full detail.
Cloud Technology and Services — This question tests Cloud Technology and Services — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: S3 Cross-Region Replication (CRR) — Amazon S3 Cross-Region Replication (CRR) is the correct feature because it automatically and asynchronously replicates objects across S3 buckets in different AWS Regions, meeting disaster recovery requirements by ensuring data is available in a secondary geographic location. CRR requires versioning to be enabled on both source and destination buckets, and it replicates new objects and object metadata by default, with optional configuration for replicating delete markers or objects from specific prefixes.
What should I do if I get this CLF-C02 question wrong?
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
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Question Discussion
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