SCS-C02 Identity and Access Management Practice Question
This SCS-C02 practice question tests your understanding of identity and access management. 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 company has multiple AWS accounts managed through AWS Organizations. The security team wants to enforce that all users must use multi-factor authentication (MFA) to access the AWS Management Console. Which combination of actions should the security team take to enforce this requirement?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Apply a service control policy (SCP) at the organization root that denies actions unless MFA is present
Option B is correct because a service control policy (SCP) can be applied to all accounts to deny access if MFA is not present. Option A is incorrect because IAM policies in individual accounts can be overridden by account administrators. Option C is incorrect because an SCP cannot directly enable MFA; it can only deny access. Option D is incorrect because while AWS CloudTrail can log, it does not enforce.
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.
✗
Use AWS CloudTrail to monitor and alert on console logins without MFA
Why it's wrong here
Monitoring does not enforce the requirement; it only alerts.
✗
Enable MFA through the AWS Account Management console for each account
Create an IAM policy in each account that denies access without MFA
Why it's wrong here
Account administrators could modify or remove the policy.
✓
Apply a service control policy (SCP) at the organization root that denies actions unless MFA is present
Why this is correct
An SCP can enforce that all accounts must use MFA by denying access if the condition is not met.
Related concept
Static NAT maps one inside address to one outside address.
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.
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: Apply a service control policy (SCP) at the organization root that denies actions unless MFA is present — Option B is correct because a service control policy (SCP) can be applied to all accounts to deny access if MFA is not present. Option A is incorrect because IAM policies in individual accounts can be overridden by account administrators. Option C is incorrect because an SCP cannot directly enable MFA; it can only deny access. Option D is incorrect because while AWS CloudTrail can log, it does not enforce.
What should I do if I get this SCS-C02 question wrong?
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.
What is the key concept behind this question?
Static NAT maps one inside address to one outside address.
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Question Discussion
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