Question 260
A post-change operational risk review considers: A session host can reach Azure resources but cannot resolve its on-premises domain controller. Which risk MOST DIRECTLY explains the need for the proposed AVD control?
Explanation
Correct Answer
The condition is: A session host can reach Azure resources but cannot resolve its on-premises domain controller. The directly related risk is: A VM that cannot resolve its domain or contact a domain controller can fail domain join and Kerberos sign-in. The corrective control is: For AD DS joined hosts verify line-of-sight to domain controllers, required DNS, network ports, join credentials and user identity prerequisites. Its test of effectiveness is: The host has valid domain trust and a test user obtains the intended AVD session without authentication errors. This issue is specific to the observed AVD behavior, not to a separate administration concern.
Incorrect Answers
This option relates to Passwordless authentication, MFA and credential selection under AZ-140 objective group 2.1. It addresses a different failure risk: Enabling one sign-in mechanism without device and directory support can leave the user unable to authenticate to the remote desktop. But the observed requirement is: A session host can reach Azure resources but cannot resolve its on-premises domain controller. For the targeted topic (Active Directory Domain Services joined session hosts), the directly relevant risk is: A VM that cannot resolve its domain or contact a domain controller can fail domain join and Kerberos sign-in. That other measure may be useful in a separate environment, but does not by itself establish the specific requested outcome. An independent qualified Azure Virtual Desktop expert must adjudicate any plausible overlapping alternatives before release.
This option relates to Microsoft Entra joined hosts and supported identities under AZ-140 objective group 2.1. It addresses a different failure risk: Treating Entra join as identical to AD DS join can break applications or profile shares that need legacy directory and Kerberos prerequisites. But the observed requirement is: A session host can reach Azure resources but cannot resolve its on-premises domain controller. For the targeted topic (Active Directory Domain Services joined session hosts), the directly relevant risk is: A VM that cannot resolve its domain or contact a domain controller can fail domain join and Kerberos sign-in. That other measure may be useful in a separate environment, but does not by itself establish the specific requested outcome. An independent qualified Azure Virtual Desktop expert must adjudicate any plausible overlapping alternatives before release.
This option relates to Azure RBAC permissions and desktop application assignment under AZ-140 objective group 2.1. It addresses a different failure risk: Giving a user resource administrator access does not automatically publish a desktop and app group assignment is not Azure contributor permission. But the observed requirement is: A session host can reach Azure resources but cannot resolve its on-premises domain controller. For the targeted topic (Active Directory Domain Services joined session hosts), the directly relevant risk is: A VM that cannot resolve its domain or contact a domain controller can fail domain join and Kerberos sign-in. That other measure may be useful in a separate environment, but does not by itself establish the specific requested outcome. An independent qualified Azure Virtual Desktop expert must adjudicate any plausible overlapping alternatives before release.