The answer is that the user lacks permissions for supporting actions like ec2:CreateNetworkInterface. This is correct because launching an EC2 instance is not a single action—it requires a chain of dependent API calls, including creating network interfaces, attaching volumes, and assigning security groups, even if the user has ec2:RunInstances allowed. On the AWS Certified SysOps Administrator Associate SOA-C02 exam, this tests your understanding of the principle that IAM policies must grant all necessary sub-actions for a service operation to succeed, a common trap where candidates focus only on the primary action. A frequent mistake is assuming RunInstances alone suffices, but AWS documentation explicitly lists these dependencies. To remember this, think of launching an EC2 instance as assembling a puzzle: RunInstances is the final piece, but you need all the edge pieces (CreateNetworkInterface, CreateVolume, etc.) first.
SOA-C02 Security and Compliance Practice Question
This SOA-C02 practice question tests your understanding of security and compliance. The scenario asks you to isolate a root cause — eliminate options that address a different problem before choosing. 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 SysOps administrator is troubleshooting an issue where an IAM user cannot launch an EC2 instance. The user has a policy that allows ec2:RunInstances. What is the most likely cause of the failure?
Clue words in this question
Noticing these words before you look at the options changes how you read each choice.
Clue: "most likely"
Why it matters: Probability qualifier — the question wants the most probable cause or outcome, not a guaranteed one. Eliminate low-probability options.
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
The user does not have permissions for supporting actions like CreateNetworkInterface.
Option D is correct because launching an EC2 instance requires permissions for multiple actions beyond RunInstances, such as creating network interfaces, volumes, etc. Option A is wrong because MFA would cause an access denied error, not a permissions issue. Option B is wrong because the policy allows the action; the issue is other required actions. Option C is wrong because RunInstances does not require KMS keys unless encrypted volumes are specified.
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.
✓
The user does not have permissions for supporting actions like CreateNetworkInterface.
Why this is correct
Launching an instance requires permissions for multiple EC2 actions.
Clue confirmation
The clue word "most likely" in the question point toward this answer.
Related concept
Read the scenario before looking for a memorised answer.
✗
The user is not using multi-factor authentication (MFA).
Why it's wrong here
MFA is not required for RunInstances unless specified.
✗
The user does not have permission to use the KMS key for encryption.
Why it's wrong here
KMS key permissions are only needed if encryption is specified.
✗
The policy is attached to a group instead of the user.
Why it's wrong here
Attaching to group still grants permissions.
Common exam traps
Common exam trap: answer the scenario, not the keyword
Many certification questions include familiar terms but test a specific constraint. Read the exact wording before choosing an answer that is generally true but wrong for this case.
Detailed technical explanation
How to think about this question
This question should be treated as a scenario, not a definition check. Identify the problem, the constraint and the best action. Then compare each option against those facts.
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.
Use explanations to understand the rule behind the answer.
TExam Day Tips
→Underline the problem statement mentally.
→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 company's IT admin needs to give a contractor read-only access to production logs without sharing account credentials. Using role-based access control (RBAC) and temporary scoped permissions — not a permanent shared password — is the correct pattern. Questions like this test whether you can apply least-privilege access across cloud identity services.
What to study next
Got this wrong? Here's your next step.
Identify which SOA-C02 exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.
Security and Compliance — This question tests Security and Compliance — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: The user does not have permissions for supporting actions like CreateNetworkInterface. — Option D is correct because launching an EC2 instance requires permissions for multiple actions beyond RunInstances, such as creating network interfaces, volumes, etc. Option A is wrong because MFA would cause an access denied error, not a permissions issue. Option B is wrong because the policy allows the action; the issue is other required actions. Option C is wrong because RunInstances does not require KMS keys unless encrypted volumes are specified.
What should I do if I get this SOA-C02 question wrong?
Identify which SOA-C02 exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.
Are there clue words in this question I should notice?
Yes — watch for: "most likely". Probability qualifier — the question wants the most probable cause or outcome, not a guaranteed one. Eliminate low-probability options.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
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This SOA-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 SOA-C02 exam.
Question Discussion
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