Administering Windows Server Hybrid Core Infrastructure (AZ-800) Practice

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Which component in a guarded fabric is responsible for checking the validity of guarded hosts?

AD DS security group
Microsoft Desktop Image Service Manager
Host Guardian Service (HGS)
Azure Resource Manager

The correct answer is: Host Guardian Service (HGS)

The Host Guardian Service (HGS) is a vital component in a guarded fabric, as it is specifically designed to check the validity of guarded hosts. In a scenario where sensitive information needs to be protected, HGS works by ensuring that only trusted hosts can launch and run shielded VMs. It validates shielded requests against a collection of defined security policies and attests to the health and configuration status of the hosts in question. By doing this, HGS plays a critical role in maintaining security within the guarded fabric ecosystem. The other components mentioned do not serve this specific purpose. An Active Directory Domain Services (AD DS) security group manages access permissions based on user and computer accounts but does not perform validity checks on host machines. The Microsoft Desktop Image Service Manager is primarily for managing operating system images, not for validating host integrity. Azure Resource Manager is focused on resource deployment and management in the Azure cloud environment rather than interacting with or validating hosts in a guarded fabric context. Thus, HGS is the correct and most fitting component for checking the security and validity of guarded hosts.