Discuss Amazon DOP-C02 Exam Topic 3 Question 63

A DevOps engineer is working on a data archival project that requires the migration of on-premises data to an Amazon S3 bucket. The DevOps engineer develops a script that incrementally archives on-premises data that is older than 1 month to Amazon S3. Data that is transferred to Amazon S3 is deleted from the on-premises location The script uses the S3 PutObject operation.

During a code review the DevOps engineer notices that the script does not verity whether the data was successfully copied to Amazon S3. The DevOps engineer must update the script to ensure that data is not corrupted during transmission. The script must use MD5 checksums to verify data integrity before the on-premises data is deleted.

Which solutions for the script will meet these requirements'? (Select TWO.)

ACheck the returned response for the Versioned Compare the returned Versioned against the MD5 checksum.

BInclude the MD5 checksum within the Content-MD5 parameter. Check the operation call's return status to find out if an error was returned.

CInclude the checksum digest within the tagging parameter as a URL query parameter.

DCheck the returned response for the ETag. Compare the returned ETag against the MD5 checksum.

EInclude the checksum digest within the Metadata parameter as a name-value pair After upload use the S3 HeadObject operation to retrieve metadata from the object.

Suggested Answer: B, D

https://docs.aws.amazon.com/AmazonS3/latest/userguide/checking-object-integrity.html

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29 comments · newest first

Daniel Parker 2 hours ago

I would pick B because including the MD5 in Content-MD5 lets the service verify integrity on upload and the tricky part is ETag semantics.

Lei Huang 16 days ago

Maybe the suggested answer is not correct because the tricky part is that ETag may not reflect the MD5 for all uploads.

Ana Ferrari 10 days ago

↳ replying to Lei Huang

Same conclusion here, B and E fit the scenario.

Angelo

I think A is less reliable. It doesn't directly verify data integrity.

Augustine 5 days ago

D is good too! ETag comparison is a smart move.

Gilbert 10 days ago

B is solid! It checks the return status, which is essential.

Millie 15 days ago

I would go with B and D. They ensure proper verification.

Terrilyn 21 days ago

I agree. MD5 checksums are crucial for data integrity.

Lorrine 26 days ago

This question is tricky! I feel like I need to think carefully.

Ozell 1 month ago

Definitely B and D. We need to ensure no data loss during migration!

Luisa 1 month ago

I’m leaning towards B and E. Metadata can be useful for tracking.

Charlesetta 1 month ago

I think both B and D cover the integrity checks well.

Sharan 2 months ago

I like option D too. ETag comparison is a good way to verify.

Lenny 2 months ago

I agree! Option B seems solid. Using Content-MD5 is crucial.

Rueben 2 months ago

This question is tricky! I feel like it tests our understanding of data integrity.

Margurite 2 months ago

Isn't using MD5 a bit outdated? There are better options for integrity checks now.

Lelia 2 months ago

I disagree, I don't see why we need to include checksums in the metadata.

Dannie 2 months ago

Wait, how does the ETag relate to MD5? Seems a bit confusing.

Gail 3 months ago

I think D is also a solid choice. ETag comparison makes sense!

Dorothy 3 months ago

Option B is the way to go! MD5 checksums are essential for data integrity.

Glennis 3 months ago

A and C don't seem right, they don't really ensure integrity.

Sharee 3 months ago

Definitely need to verify before deleting, can't risk data loss!

Annelle 3 months ago

Wait, can we really trust the ETag for integrity checks?

Augustine 3 months ago

I think D is the way to go, ETag is super reliable.

Bonita 4 months ago

Option B is solid, using Content-MD5 is a must!

Johnson 4 months ago

I’m a bit confused about the tagging parameter option; it seems like it could work, but I don't recall it being a common practice for integrity checks.

Josue 4 months ago

I practiced a similar question where we had to verify data integrity, and I feel like checking the ETag against the MD5 checksum could be a solid approach.

Kirk 4 months ago

I think including the MD5 checksum in the Content-MD5 parameter makes sense, but I’m not clear on how to check the return status effectively.

Abel 6 months ago

I remember something about using ETags for verifying uploads, but I'm not entirely sure how they relate to MD5 checksums in this context.

Amazon DOP-C02 Exam - Topic 3 Question 63 Discussion