The correct answer is an IAM policy that denies all actions unless `aws:MultiFactorAuthPresent` is true. This works by attaching a Deny effect to every AWS action when the `aws:MultiFactorAuthPresent` condition key evaluates to false, effectively blocking any API call—including ConsoleLogin—if the user has not authenticated with a valid MFA token. On the AWS Certified Security Specialty SCS-C02 exam, this scenario tests your understanding of using condition keys with IAM policies to enforce MFA, often appearing as a trap where candidates mistakenly choose a policy that only denies ConsoleLogin instead of all actions. The key distinction is that MFA enforcement must cover every action, not just the login event, to prevent users from bypassing the requirement after session creation. A simple memory tip: think “Deny all unless MFA present” — if the condition is false, the request is blocked across the board.
SCS-C02 Identity and Access Management Practice Question
This SCS-C02 practice question tests your understanding of identity and access management. 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.
An organization wants to enforce multi-factor authentication (MFA) for all IAM users accessing the AWS Management Console. Which policy should be used?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
A policy that denies all actions unless aws:MultiFactorAuthPresent is true.
Option D is correct because it uses an IAM policy with a Deny effect on all actions when `aws:MultiFactorAuthPresent` is false (or not true). This ensures that any IAM user attempting to perform any action, including ConsoleLogin, must have authenticated with MFA; otherwise, the request is denied. This is the standard approach to enforce MFA for all AWS Management Console access.
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.
✗
A policy that allows all actions and denies when aws:MultiFactorAuthPresent is true.
Why it's wrong here
This would deny MFA-authenticated access, which is the opposite of what is needed.
✗
A policy that allows all actions except ConsoleLogin unless MFA is present.
Why it's wrong here
This does not cover API calls, only console login.
✗
A policy that allows all actions when aws:MultiFactorAuthPresent is true.
Why it's wrong here
This does not explicitly deny access when MFA is not present; an explicit deny is needed for enforcement.
✓
A policy that denies all actions unless aws:MultiFactorAuthPresent is true.
Why this is correct
This explicitly denies access if MFA is not present, enforcing MFA.
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 the condition key evaluation — thinking a policy that 'allows when MFA is present' is sufficient, but without an explicit Deny for when MFA is absent, other policies could still grant access, making the enforcement incomplete.
Detailed technical explanation
How to think about this question
Under the hood, the `aws:MultiFactorAuthPresent` condition key is a boolean that is `true` only if the user authenticated with a multi-factor device (e.g., hardware TOTP token or virtual MFA) during the current session. A Deny policy with `!aws:MultiFactorAuthPresent` (or `false`) ensures that even if another policy grants access, the Deny overrides it due to the explicit deny evaluation logic in IAM. In real-world scenarios, this policy must be attached to all IAM users or applied via an SCP to prevent users from removing MFA enforcement from their own accounts.
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 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 exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
Identity and Access Management — This question tests Identity and Access Management — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: A policy that denies all actions unless aws:MultiFactorAuthPresent is true. — Option D is correct because it uses an IAM policy with a Deny effect on all actions when `aws:MultiFactorAuthPresent` is false (or not true). This ensures that any IAM user attempting to perform any action, including ConsoleLogin, must have authenticated with MFA; otherwise, the request is denied. This is the standard approach to enforce MFA for all AWS Management Console access.
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.
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 →
These questions test the same concept from different angles. Work through them to make sure you can recognise it however the exam phrases it.
Variation 1. A security administrator needs to ensure that all IAM users in the account use multi-factor authentication (MFA) to access the AWS Management Console. What is the most effective way to enforce this?
easy
A.Set the IAM password policy to require MFA.
B.Use an SCP to deny access if MFA is not present, with a condition "aws:MultiFactorAuthPresent":"true".
C.Enable MFA for the root user and require all IAM users to use the root user credentials.
✓ D.Create an IAM policy that denies all actions unless MFA is present, and attach it to all users.
Why D: Option C is correct because an IAM policy with a condition that denies actions if MFA is not present can be attached to users or groups. Option A is wrong because the root user MFA is separate. Option B is wrong because password policy does not enforce MFA. Option D is wrong because the condition in a policy must use 'aws:MultiFactorAuthPresent' with a boolean value, not 'true'.
Last reviewed: Jun 24, 2026
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This SCS-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 SCS-C02 exam.
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