Thin crust, no green peppers

You have a training room full of identical computers running Windows XP, but the training room coordinator would like to change all of the systems to run a clean version of Windows 7. Each computer must also include the installation of four important training applications. Which of these installation methods would be the most efficient way to complete this task?

Has anyone seen my shades?

You have just contracted with a third-party to provide web-hosting for your organization, and all of the servers are located at a remote facility. Which of these methods would allow you to securely manage your servers over your insecure Internet connection?