A sysadmin is looking to use Pre Booth Execution over a network by keeping operating system installation files on a server. Which type of server is this most likely to be?

TFTP Server

Explanation:

For security reasons, an administrator of a network would save an operating system installation file in a TFTP server, from which operating system installer can be run on any end device in the network with a copy of the installation file from server.

All files from the network are saved to this server, so when the copy of the operating system in the network is corrupted, reformatting can be done still through the pre booth execution.

The correct answer is: TFTP server.

Explanation:

A TFTP server lets the system administrator install programs from the same network on other computers and maintain a registry. This is done mainly to prevent information loss in case the network gets compromised or one of the machines gets infected with malicious software.