Which of the following installation methods MUST use the TCP/IP protocol to deploy systems?

ImageX is a tool for managing WIM files and does not inherently define the network protocol used for system deployment.

Virtualization templates are pre-configured virtual machine images that can be cloned, but their deployment method does not strictly mandate TCP/IP as the primary deployment protocol in the same way WDS does for bare-metal installs.

Ghost is a disk imaging tool that can deploy images locally or over a network, but it doesn't mandate TCP/IP for all deployment scenarios, as local deployment is also possible.

WDS deploys operating systems using network boot protocols like PXE, TFTP, and HTTP/HTTPS, which all operate over the TCP/IP suite to transfer installation files and images to client machines. It is designed for large-scale network-based deployments where TCP/IP is essential for communication between the WDS server and clients.