(1) A manager has asked the administrator to change the default background of her machine, which uses XDM. Which file does the administrator need to modify in order to achieve this? Explain the main differences between XDM and KDM. Which would you prefer?
(2) Please provide one example of a Linux Based (i.e. router, hypervisor, appliance, etc.) system. Provide a brief product description, use, and function.
Please provide sources and references