Which of the following is the best way to distribute custom images to 800 devices...

In enterprise environments, network-based deployment solutions (such as Windows Deployment Services or SCCM) allow administrators to push images across the network to hundreds of devices efficiently. These tools support hardware-specific drivers (for different vendor classes) and can accommodate user-group configurations using task sequences or answer files.

A and B (xcopy and robocopy) are file-level tools and not designed for full OS image deployment.

C. Using local tools per device is inefficient for large-scale rollouts (800 devices).

D. Network-based deployment is the industry standard for this scale.