AZ-800 Question #179: Real Exam Question with Answer & Explanation

Question

You have an Active Directory Domain Services (AD DS) domain that contains the domain controllers shown in the following table. The domain contains an app named App1 that uses a custom application partition to store configuration data. You decommission App1. When you attempt to remove the custom application partition, the process fails. Which domain controller is unavailable?

Options

• ADC1
• BDC2
• CDC3
• DDC4

Explanation

Removing a custom application partition requires all domain controllers hosting a replica of that partition to be available and synchronized; the failure indicates that DC3, a writable domain controller likely hosting a replica, is unavailable.

Common mistakes.

• A. DC1 is a Read-only domain controller (RODC); RODCs cannot host application partitions, so its availability would not directly prevent the removal of an application partition.
• B. DC2 is a writable domain controller and could host a replica, but the provided answer points to DC3 as the specific unavailable controller causing the failure.
• D. DC4 is a writable domain controller and could host a replica, but the provided answer points to DC3 as the specific unavailable controller causing the failure.

Concept tested. Active Directory application partition removal requirements

Reference. https://learn.microsoft.com/en-us/windows-server/identity/ad-ds/manage/ad-cmdlets/ntdsutil#to-remove-an-application-directory-partition

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