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AWS Certified Solutions Architect Associate SAA-C03 Practice Question

What is a recommended security measure to prevent unauthorized access to AWS accounts?

Enforcing complex password requirements
Enabling multi-factor authentication for all user accounts
Enforcing IP whitelisting for all user logins
Regularly rotating IAM credentials

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Answer Description

Enabling multi-factor authentication (MFA) on all user accounts is a security best practice because it requires both the user's credentials and access to a physical device that generates a time-based code, significantly reducing the risk of unauthorized access. Rotating IAM credentials refers to changing access keys and passwords, which is also a best practice but does not involve the use of a physical device. IP whitelisting and enforced password complexity can enhance security but do not provide the same level of protection against compromised credentials as MFA does.

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