Question

Difficulty: EasyHybrid and Multi-Tenant Identity Solutions

CloudScale Industries is designing a hybrid identity solution to synchronize on-premises Active Directory Domain Services (AD DS) user accounts to a single Microsoft Entra ID tenant.

The solution must meet the following requirements:
- Users must be able to sign in to Azure resources using their on-premises passwords.
- Users must be able to authenticate successfully even if the on-premises network or domain controllers are temporarily offline.
- Users must have the ability to reset their passwords in the cloud, and the changes must immediately update their passwords on-premises.

Which two features or configurations should you recommend? (Select two.)

  1. Password Hash Synchronization (PHS)Answer
  2. Password writebackAnswer
  3. C
    Active Directory Federation Services (AD FS)
  4. D
    Direct assignment of Azure RBAC roles to individual synchronized user accounts
  5. E
    Permanently active Entra ID roles assigned to administrative accounts in Privileged Identity Management (PIM)

Answer

To meet the requirements, you should configure Password Hash Synchronization (PHS) to allow offline cloud authentication and enable Password writeback to support updating on-premises passwords from the cloud.
Password Hash Synchronization (PHS) satisfies the requirement to authenticate users in the cloud using on-premises passwords while maintaining sign-in capability during on-premises network or domain controller outages. Password writeback enables self-service password reset (SSPR) updates in Microsoft Entra ID to sync back to the on-premises Active Directory.

Step-by-Step Solution

1
Identify the authentication method that allows users to sign in with on-premises passwords and provides high availability during on-premises network outages.
Password Hash Synchronization (PHS) is selected because it caches password hashes in the cloud, removing dependency on on-premises domain controllers during authentication.
Meeting the offline availability requirement rules out Active Directory Federation Services (AD FS).
2
Identify the feature required to enable self-service password reset changes in the cloud to sync back to the on-premises directory.
Password writeback is selected.
Enabling password writeback ensures that SSPR updates the on-premises Active Directory.

Key Concept

Hybrid identity synchronization and authentication methods with Microsoft Entra Connect
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