SAP-C02 Practice Question: Design Solutions for Organizational Complexity
This SAP-C02 practice question tests your understanding of design solutions for organizational complexity. 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.
Refer to the exhibit. A solutions architect is reviewing an IAM trust policy for a Lambda function's execution role. The function needs to access an S3 bucket in the same account. The trust policy is as shown. What is missing for the Lambda function to successfully assume the role?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
An IAM policy must be attached to the role granting permissions to the S3 bucket
Option A is correct because the IAM trust policy only allows the Lambda service to assume the role, but it does not grant any permissions to access the S3 bucket. For the Lambda function to successfully read or write objects in the S3 bucket, an IAM permissions policy (e.g., s3:GetObject, s3:PutObject) must be attached to the role. Without this policy, the role has no effective permissions to perform actions on the bucket, even though the trust policy allows the role to be assumed.
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.
✓
An IAM policy must be attached to the role granting permissions to the S3 bucket
Why this is correct
The trust policy allows Lambda to assume the role, but the role itself needs an IAM policy to grant S3 access.
Related concept
Read the scenario before looking for a memorised answer.
✗
A service control policy must allow Lambda to assume roles
Why it's wrong here
SCPs are not required for service access.
✗
The S3 bucket must have a resource-based policy allowing the Lambda function
Why it's wrong here
Not necessary if the role has permissions via IAM policy.
✗
The trust policy must specify the Lambda function name
Why it's wrong here
The trust policy uses service principal, which is correct.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates often confuse the trust policy (which controls who can assume the role) with the permissions policy (which controls what actions the role can perform), leading them to think the trust policy alone is sufficient for accessing resources.
Detailed technical explanation
How to think about this question
Under the hood, IAM role assumption involves two distinct policies: the trust policy (which defines who can assume the role) and the permissions policy (which defines what actions the assumed role can perform). When a Lambda function invokes, the AWS Lambda service uses the function's execution role to obtain temporary credentials via the STS AssumeRole API; if the trust policy allows lambda.amazonaws.com, the role is assumed, but subsequent API calls to S3 are evaluated against the permissions policy attached to the role. A common real-world scenario is when a developer attaches only a trust policy and wonders why the function gets 'Access Denied' errors—this is because the permissions policy is missing.
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.
Quick reference
AWS S3 Storage Class Comparison
Storage Class
Min Duration
Retrieval
Use Case
S3 Standard
None
Immediate
Frequently accessed data
S3 Standard-IA
30 days
Immediate
Infrequent access, rapid retrieval
S3 One Zone-IA
30 days
Immediate
Non-critical infrequent data
S3 Intelligent-Tiering
None
Immediate–hours
Unknown or changing access patterns
S3 Glacier Instant
90 days
Milliseconds
Archive with instant retrieval
S3 Glacier Flexible
90 days
Minutes–hours
Archive, flexible retrieval
S3 Glacier Deep Archive
180 days
Hours
Long-term compliance archive
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 Solutions for Organizational Complexity — This question tests Design Solutions for Organizational Complexity — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: An IAM policy must be attached to the role granting permissions to the S3 bucket — Option A is correct because the IAM trust policy only allows the Lambda service to assume the role, but it does not grant any permissions to access the S3 bucket. For the Lambda function to successfully read or write objects in the S3 bucket, an IAM permissions policy (e.g., s3:GetObject, s3:PutObject) must be attached to the role. Without this policy, the role has no effective permissions to perform actions on the bucket, even though the trust policy allows the role to be assumed.
What should I do if I get this SAP-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.
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 →
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.
This SAP-C02 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 SAP-C02 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.