- A
Update the IAM role policy to add s3:PutObject permissions for the bucket prefix.
Why wrong: Even if IAM allows s3:PutObject, an explicit Deny in an S3 bucket policy still blocks the request. If the required SSE-KMS encryption headers, including the required CMK key ID, are not present, the policy Deny still applies.
- B
Update the uploader so the CreateMultipartUpload request includes SSE-KMS with the required CMK key ID; any separate PutObject uploads should include the same headers.
For multipart uploads, SSE-KMS is specified on CreateMultipartUpload rather than on individual UploadPart calls. Supplying the required SSE-KMS settings and CMK key ID on the upload initiation request satisfies the bucket policy's condition without weakening the encryption requirement.
- C
Remove the bucket policy's explicit Deny statement so the IAM permissions control access.
Why wrong: Removing the Deny weakens the encryption enforcement requirement and would allow uploads that do not meet the SSE-KMS and specific CMK requirements.
- D
Switch to client-side encryption (SSE-C) because it also encrypts data at rest in S3.
Why wrong: SSE-C does not satisfy the bucket policy conditions that specifically require SSE-KMS and the required x-amz-server-side-encryption-aws-kms-key-id for the designated CMK. Requests using SSE-C would still be denied.
Quick Answer
The answer is to ensure the CreateMultipartUpload request includes the required SSE-KMS headers with the specific CMK key ID, and that any subsequent PutObject part uploads also include the same headers. This is correct because the bucket policy explicitly denies both PutObject and CreateMultipartUpload unless the request contains x-amz-server-side-encryption=aws:kms and the matching x-amz-server-side-encryption-aws-kms-key-id. In multipart uploads, the encryption context is set at the initiation step, and if that initial request lacks the required headers, the explicit Deny in the bucket policy triggers immediately, causing the intermittent AccessDenied errors. On the SAA-C03 exam, this scenario tests your understanding that bucket policy Deny statements are evaluated before Allow statements, and that multipart upload encryption requirements must be satisfied at the CreateMultipartUpload stage, not just on individual parts. A common trap is assuming only the final PutObject or CompleteMultipartUpload needs encryption headers. Memory tip: "Initiate with the key, or the Deny will make you flee."
SAA-C03 Design Secure Architectures Practice Question
This SAA-C03 practice question tests your understanding of design secure architectures. 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.
A batch process uploads artifacts to an Amazon S3 bucket using multipart uploads. The bucket policy contains a statement that explicitly denies PutObject and CreateMultipartUpload unless the request uses server-side encryption with AWS KMS (SSE-KMS) and includes these request headers/parameters: x-amz-server-side-encryption=aws:kms and x-amz-server-side-encryption-aws-kms-key-id set to a specific CMK. After the process was updated, uploads intermittently fail with AccessDenied errors. Which change is the best way to make uploads succeed while still meeting the bucket policy's encryption requirement?
Clue words in this question
Noticing these words before you look at the options changes how you read each choice.
Clue:
"best"Why it matters: Signals that multiple options may be partially correct. Choose the option that most directly solves the exact problem described, not the one that sounds most complete.
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
Update the uploader so the CreateMultipartUpload request includes SSE-KMS with the required CMK key ID; any separate PutObject uploads should include the same headers.
Option B is correct because the bucket policy explicitly denies `PutObject` and `CreateMultipartUpload` unless the request includes both `x-amz-server-side-encryption=aws:kms` and the specific `x-amz-server-side-encryption-aws-kms-key-id` header. The intermittent failures occur because the batch process's `CreateMultipartUpload` request (which initiates the multipart upload) is missing these required headers, causing the explicit Deny to trigger. By ensuring that the `CreateMultipartUpload` request includes SSE-KMS with the correct CMK key ID, and that any subsequent `PutObject` parts also include the same headers, the uploads will satisfy the bucket policy and succeed.
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.
- ✗
Update the IAM role policy to add s3:PutObject permissions for the bucket prefix.
Why it's wrong here
Even if IAM allows s3:PutObject, an explicit Deny in an S3 bucket policy still blocks the request. If the required SSE-KMS encryption headers, including the required CMK key ID, are not present, the policy Deny still applies.
- ✓
Update the uploader so the CreateMultipartUpload request includes SSE-KMS with the required CMK key ID; any separate PutObject uploads should include the same headers.
Why this is correct
For multipart uploads, SSE-KMS is specified on CreateMultipartUpload rather than on individual UploadPart calls. Supplying the required SSE-KMS settings and CMK key ID on the upload initiation request satisfies the bucket policy's condition without weakening the encryption requirement.
Clue confirmation
The clue word "best" in the question point toward this answer.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
Remove the bucket policy's explicit Deny statement so the IAM permissions control access.
Why it's wrong here
Removing the Deny weakens the encryption enforcement requirement and would allow uploads that do not meet the SSE-KMS and specific CMK requirements.
- ✗
Switch to client-side encryption (SSE-C) because it also encrypts data at rest in S3.
Why it's wrong here
SSE-C does not satisfy the bucket policy conditions that specifically require SSE-KMS and the required x-amz-server-side-encryption-aws-kms-key-id for the designated CMK. Requests using SSE-C would still be denied.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates assume the encryption requirement only applies to the final object or to `PutObject` calls, but the explicit Deny in the bucket policy applies to the `CreateMultipartUpload` API call itself, which must also include the required headers to avoid AccessDenied errors.
Detailed technical explanation
How to think about this question
Multipart uploads in S3 consist of three distinct API calls: `CreateMultipartUpload`, `UploadPart`, and `CompleteMultipartUpload`. The bucket policy's explicit Deny evaluates each request independently; if the `CreateMultipartUpload` request lacks the required SSE-KMS headers, it is denied immediately, even if later parts include them. This is a common pitfall because developers often assume the encryption setting is inherited from the initiation request, but S3 enforces the policy on every individual API call.
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.
What to study next
Got this wrong? Here's your next step.
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
- →
Design Secure Architectures — study guide chapter
Learn the concepts, then practise the questions
- →
Design Secure Architectures practice questions
Targeted practice on this topic area only
- →
All SAA-C03 questions
1,040 questions across all exam domains
- →
SAA-C03 study guide
Full concept coverage aligned to exam objectives
- →
SAA-C03 practice test guide
How to use practice tests most effectively before exam day
Related practice questions
Related SAA-C03 practice-question pages
Use these pages to review the topic behind this question. This is how one missed question becomes focused revision.
Design Secure Architectures practice questions
Practise SAA-C03 questions linked to Design Secure Architectures.
Design Resilient Architectures practice questions
Practise SAA-C03 questions linked to Design Resilient Architectures.
Design High-Performing Architectures practice questions
Practise SAA-C03 questions linked to Design High-Performing Architectures.
Design Cost-Optimized Architectures practice questions
Practise SAA-C03 questions linked to Design Cost-Optimized Architectures.
SAA-C03 VPC practice questions
Practise SAA-C03 questions linked to SAA-C03 VPC.
SAA-C03 S3 lifecycle policy questions
Practise SAA-C03 questions linked to SAA-C03 S3 lifecycle policy questions.
SAA-C03 RDS Multi-AZ questions
Practise SAA-C03 questions linked to SAA-C03 RDS Multi-AZ questions.
SAA-C03 IAM policy practice questions
Practise SAA-C03 questions linked to SAA-C03 IAM policy.
SAA-C03 Route 53 failover questions
Practise SAA-C03 questions linked to SAA-C03 Route 53 failover questions.
SAA-C03 CloudFront practice questions
Practise SAA-C03 questions linked to SAA-C03 CloudFront.
SAA-C03 NAT gateway questions
Practise SAA-C03 questions linked to SAA-C03 NAT gateway questions.
SAA-C03 VPC endpoint questions
Practise SAA-C03 questions linked to SAA-C03 VPC endpoint questions.
Practice this exam
Start a free SAA-C03 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 SAA-C03 question test?
Design Secure Architectures — This question tests Design Secure Architectures — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Update the uploader so the CreateMultipartUpload request includes SSE-KMS with the required CMK key ID; any separate PutObject uploads should include the same headers. — Option B is correct because the bucket policy explicitly denies `PutObject` and `CreateMultipartUpload` unless the request includes both `x-amz-server-side-encryption=aws:kms` and the specific `x-amz-server-side-encryption-aws-kms-key-id` header. The intermittent failures occur because the batch process's `CreateMultipartUpload` request (which initiates the multipart upload) is missing these required headers, causing the explicit Deny to trigger. By ensuring that the `CreateMultipartUpload` request includes SSE-KMS with the correct CMK key ID, and that any subsequent `PutObject` parts also include the same headers, the uploads will satisfy the bucket policy and succeed.
What should I do if I get this SAA-C03 question wrong?
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
Are there clue words in this question I should notice?
Yes — watch for: "best". Signals that multiple options may be partially correct. Choose the option that most directly solves the exact problem described, not the one that sounds most complete.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
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 11, 2026
This SAA-C03 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 SAA-C03 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.