Scenario: A Citrix Engineer is designing a Provisioning Services environment based on the following environmental factors:
-A large number of target devices are spread over multiple subnets.
-The subnets include non-Provisioning Services machines that rely on starting up over the network
-A security mandate prohibits the use of TFTP.
-Provisioning Services 7.6 Update 1 is being used to maintain LTSR compliance.
Which Provisioning Services boot method is appropriate for the target devices?