Exam AWS Certified Solutions Architect - Professional topic 1 question 483 discussion

Exam question from Amazon's AWS Certified Solutions Architect - Professional

Question #: 483
Topic #: 1

[All AWS Certified Solutions Architect - Professional Questions]

A company is building an AWS landing zone and has asked a Solutions Architect to design a multi-account access strategy that will allow hundreds of users to use corporate credentials to access the AWS Console. The company is running a Microsoft Active Directory, and users will use an AWS Direct Connect connection to connect to AWS. The company also wants to be able to federate to third-party services and providers, including custom applications.
Which solution meets the requirements by using the LEAST amount of management overhead?

A. Connect the Active Directory to AWS by using single sign-on and an Active Directory Federation Services (AD FS) with SAML 2.0, and then configure the Identity Provider (IdP) system to use form-based authentication. Build the AD FS portal page with corporate branding, and integrate third-party applications that support SAML 2.0 as required.
B. Create a two-way Forest trust relationship between the on-premises Active Directory and the AWS Directory Service. Set up AWS Single Sign-On with AWS Organizations. Use single sign-on integrations for connections with third-party applications.
C. Configure single sign-on by connecting the on-premises Active Directory using the AWS Directory Service AD Connector. Enable federation to the AWS services and accounts by using the IAM applications and services linking function. Leverage third-party single sign-on as needed.
D. Connect the company's Active Directory to AWS by using AD FS and SAML 2.0. Configure the AD FS claim rule to leverage Regex and a common Active Directory naming convention for the security group to allow federation of all AWS accounts. Leverage third-party single sign-on as needed, and add it to the AD FS server.

Show Suggested Answer

Suggested Answer: B 🗳️

by awsec2 at Sept. 14, 2019, 8:41 p.m.

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sb333

Highly Voted 3 years, 10 months ago

B is the correct answer and fully supports the requirements of the question with very little management. Managing an AD FS implementation is not a LEAST overhead solution. If you have had to support AD FS, you know this. Support for B is here: https://docs.aws.amazon.com/singlesignon/latest/userguide/what-is.html

upvoted 19 times

Smart

3 years, 10 months ago

Agreed. I wasn't sure about two-way relationship. https://docs.aws.amazon.com/singlesignon/latest/userguide/connectonpremad.html

upvoted 5 times

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donathon

Highly Voted 3 years, 10 months ago

D A: Adds complexity to the SSO. https://aws.amazon.com/blogs/security/how-to-implement-a-general-solution-for-federated-apicli-access-using-saml-2-0/ B: You will need to manage AWS Directory Service which is additional overhead. C: As an alternative to AWS Directory Service for Microsoft Active Directory (AWS Managed Microsoft AD), AD Connector is an Active Directory proxy for AWS created applications and services only. You configure the proxy to use a specified Active Directory domain. When the application must look up a user or group in Active Directory, AD Connector proxies the request to the directory. Similarly, when a user logs in to the application, AD Connector proxies the authentication request to the directory. There are no third-party applications that work with AD Connector. D: https://aws.amazon.com/blogs/security/aws-federated-authentication-with-active-directory-federation-services-ad-fs/

upvoted 18 times

Kopa

3 years, 9 months ago

With AWS SSO, you can enable a highly available SSO service with just a few clicks. There is no additional infrastructure to deploy or AWS account to set up. AWS SSO is a highly available and a completely secure infrastructure that scales to your needs and does not require software or hardware to manage. AWS SSO records all sign-in activity in AWS CloudTrail, giving you the visibility to monitor and audit SSO activity in one place.

upvoted 2 times

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3 years, 4 months ago

Selected Answer: B

Requirement is LEAST amount of administrative overhead. Managed Services AWS Active Directory and SSO will have less Administrative overhead. So B is perfect.

upvoted 2 times

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jyrajan69

3 years, 5 months ago

First you must consider the requirement for a multi-account strategy, before least overhead. Answer D does not involve AWS Organizations, and it involves more complications, so based on all this the answer has to be B

upvoted 2 times

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cannottellname

3 years, 6 months ago

3 years, 9 months ago

B is the correct Answer https://aws.amazon.com/solutions/implementations/aws-landing-zone/ https://docs.aws.amazon.com/singlesignon/latest/userguide/connectonpremad.html https://docs.aws.amazon.com/singlesignon/latest/userguide/what-is.html

upvoted 7 times

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