The answer is to use AWS managed policies when possible and to grant least privilege by specifying exact actions and resources. This is correct because AWS managed policies are created and maintained by AWS, reducing the risk of misconfiguration while automatically adhering to evolving best practices. Least privilege, as demonstrated by avoiding wildcards like s3:* and instead using s3:GetObject with a specific bucket ARN, minimizes the blast radius if credentials are compromised. On the AWS Certified Security Specialty SCS-C02 exam, this principle tests your understanding of the Well-Architected Framework’s security pillar, often appearing in scenario-based questions where you must choose between a broad policy and a scoped one. A common trap is selecting “use customer managed policies for all cases” — remember that managed policies are preferred for common use cases, while customer managed are for custom needs. Memory tip: “Managed by AWS, least by design” — let AWS handle the common, and you handle the specific.
SCS-C02 Management and Security Governance Practice Question
This SCS-C02 practice question tests your understanding of management and security governance. 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.
Which TWO are best practices for managing IAM policies? (Select TWO.)
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 the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Grant least privilege by using specific actions and resources
Option D is correct because the principle of least privilege is a foundational security best practice in AWS IAM. By specifying exact actions (e.g., s3:GetObject) and resources (e.g., arn:aws:s3:::example-bucket/*) instead of using wildcards, you minimize the blast radius of a compromised credential or misconfigured policy. This aligns with the AWS Well-Architected Framework's security pillar, which mandates granting only the permissions required to perform a task.
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.
✗
Use wildcards (*) to simplify policy management
Why it's wrong here
Wildcards grant excessive permissions.
✗
Use inline policies instead of managed policies
Why it's wrong here
Managed policies are easier to maintain.
✗
Use SCPs to enforce permissions
Why it's wrong here
SCPs are for Organizations, not IAM.
✓
Grant least privilege by using specific actions and resources
Why this is correct
Least privilege is a security best practice.
Clue confirmation
The clue word "best" in the question point toward this answer.
Related concept
Read the scenario before looking for a memorised answer.
✓
Use AWS managed policies when possible
Why this is correct
Managed policies reduce maintenance.
Clue confirmation
The clue word "best" in the question point toward this answer.
Related concept
Read the scenario before looking for a memorised answer.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates often confuse SCPs as a method to grant permissions, when in fact SCPs only define a maximum permission boundary and cannot grant any access—permissions must still be explicitly allowed by IAM policies within the account.
Detailed technical explanation
How to think about this question
Under the hood, IAM policy evaluation uses an explicit deny override model: an explicit deny in any policy (identity-based, resource-based, or SCP) always overrides an allow. When you grant least privilege with specific actions and resources, you reduce the risk of unintended access paths, such as a user with s3:ListAllMyBuckets being able to enumerate all buckets in the account. In a real-world scenario, a developer might need only s3:PutObject on a specific prefix; granting s3:PutObject on the entire bucket would allow overwriting critical logs or backups, which is a common misconfiguration exploited in data breaches.
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.
Management and Security Governance — This question tests Management and Security Governance — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Grant least privilege by using specific actions and resources — Option D is correct because the principle of least privilege is a foundational security best practice in AWS IAM. By specifying exact actions (e.g., s3:GetObject) and resources (e.g., arn:aws:s3:::example-bucket/*) instead of using wildcards, you minimize the blast radius of a compromised credential or misconfigured policy. This aligns with the AWS Well-Architected Framework's security pillar, which mandates granting only the permissions required to perform a task.
What should I do if I get this SCS-C02 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.
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Question Discussion
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