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Identity and Access Management →hardMultiple ChoiceObjective-mapped

SCS-C02 Identity and Access Management Practice Question

This SCS-C02 practice question tests your understanding of identity and access management. 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.

A large enterprise uses AWS Organizations to manage multiple accounts. The security team has implemented a Service Control Policy (SCP) at the root level that denies all actions unless the request originates from the corporate IP range (10.0.0.0/8). Recently, a developer in a member account tried to launch an EC2 instance from the AWS Management Console while connected via a VPN that provides an IP address within the corporate range. However, the launch failed with an 'AccessDenied' error. The developer is using an IAM user with full EC2 permissions (ec2:*). The SCP is as follows: {"Version":"2012-10-17","Statement":[{"Effect":"Deny","Action":"*","Resource":"*","Condition":{"NotIpAddress":{"aws:SourceIp":"10.0.0.0/8"}}}]}. What is the MOST likely reason for 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.

Question 1hardmultiple choice

Read the full VPN explanation →

A
The SCP allows actions only from the specified IP range, but the developer's IP is not in that range.
Why wrong: The SCP denies actions from outside the range; it does not allow actions from inside. However, the developer's IP should be in range, so this is not the issue.
B
The SCP does not apply to IAM users in member accounts; it only applies to the root user.
Why wrong: SCPs apply to all principals in the affected accounts, including IAM users.
C
The aws:SourceIp condition key does not work correctly for requests made via the AWS Management Console because the console may use a different IP.
The console may use intermediary IPs; the source IP condition is not reliable for console access.
D
The IAM user does not have the necessary permissions because the SCP explicitly denies all actions.
Why wrong: The SCP denies actions from outside the IP range, but the developer is inside the range, so the SCP should not deny.

Full breakdown with real-world context →

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

✓

The aws:SourceIp condition key does not work correctly for requests made via the AWS Management Console because the console may use a different IP.

Option C is correct. The SCP uses the aws:SourceIp condition, but when accessing the Management Console, the IP address seen by AWS is the console's IP, which may not be the same as the developer's VPN IP if the console uses a proxy or if the VPN is configured incorrectly. Option A is wrong because SCPs affect all principals, including the root user. Option B is wrong because the SCP denies actions, not allows them; an explicit deny overrides allows. Option D is wrong because the SCP denies all actions, so even if the developer has permissions, the SCP denies them.

Key principle: NAT direction and interface roles matter as much as the IP address mapping. Inside/outside designation controls which traffic is translated.

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 SCP allows actions only from the specified IP range, but the developer's IP is not in that range.
Why it's wrong here
The SCP denies actions from outside the range; it does not allow actions from inside. However, the developer's IP should be in range, so this is not the issue.
✗
The SCP does not apply to IAM users in member accounts; it only applies to the root user.
Why it's wrong here
SCPs apply to all principals in the affected accounts, including IAM users.
✓
The aws:SourceIp condition key does not work correctly for requests made via the AWS Management Console because the console may use a different IP.
Why this is correct
The console may use intermediary IPs; the source IP condition is not reliable for console access.
Clue confirmation
The clue word "most likely" in the question point toward this answer.
Related concept
Static NAT maps one inside address to one outside address.
✗
The IAM user does not have the necessary permissions because the SCP explicitly denies all actions.
Why it's wrong here
The SCP denies actions from outside the IP range, but the developer is inside the range, so the SCP should not deny.

Common exam traps

Common exam trap: NAT rules depend on direction and matching traffic

NAT is not only about the public address. The inside/outside interface roles and the ACL or rule that matches traffic are just as important.

Detailed technical explanation

How to think about this question

NAT questions usually test address translation, overload/PAT behaviour, static mappings and whether the right traffic is being translated. Read the interface direction and address terms carefully.

KKey Concepts to Remember

Static NAT maps one inside address to one outside address.
PAT allows many inside hosts to share one public address using ports.
Inside local and inside global describe the private and translated addresses.
NAT ACLs identify traffic for translation, not always security filtering.

TExam Day Tips

Identify inside and outside interfaces first.
Check whether the scenario needs static NAT, dynamic NAT or PAT.
Do not confuse NAT matching ACLs with normal packet-filtering intent.

Key takeaway

NAT direction and interface roles matter as much as the IP address mapping. Inside/outside designation controls which traffic is translated.

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.

Review the four NAT address types (inside local, inside global, outside local, outside global), PAT port overload, and static vs dynamic NAT use cases. Then practise related SCS-C02 NAT questions on configuration and troubleshooting.

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FAQ

Questions learners often ask

What does this SCS-C02 question test?

Identity and Access Management — This question tests Identity and Access Management — Static NAT maps one inside address to one outside address..

What is the correct answer to this question?

The correct answer is: The aws:SourceIp condition key does not work correctly for requests made via the AWS Management Console because the console may use a different IP. — Option C is correct. The SCP uses the aws:SourceIp condition, but when accessing the Management Console, the IP address seen by AWS is the console's IP, which may not be the same as the developer's VPN IP if the console uses a proxy or if the VPN is configured incorrectly. Option A is wrong because SCPs affect all principals, including the root user. Option B is wrong because the SCP denies actions, not allows them; an explicit deny overrides allows. Option D is wrong because the SCP denies all actions, so even if the developer has permissions, the SCP denies them.

What should I do if I get this SCS-C02 question wrong?

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?

Static NAT maps one inside address to one outside address.

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