AWS Certified Advanced Networking – Specialty (ANS-C00) — Question 142

Your AWS WorkSpaces users are unable to authenticate. What could be one reason for this?

Answer options

• A. Your AD server is running Windows Server 2016
• B. Port 3389 is not open to your AD server.
• C. Port 389 is not open to your AD server.
• D. Your AD server is running Windows Server 2012 Core Edition.

Correct answer: C

Explanation

The correct answer is C because port 389 is used for LDAP, which is essential for authentication in Active Directory environments. If this port is not open, users will not be able to authenticate. Option A is incorrect as Windows Server 2016 supports AWS WorkSpaces, and option B is irrelevant since port 3389 is used for RDP, not authentication. Option D is also incorrect as Windows Server 2012 Core Edition can still function correctly with AWS WorkSpaces.