This depends on your expertise and preference. Typically I suggest setting your optical media drive (CD/DVD/ETC) as your first boot device, but this tends to slow down your boot time ever so slightly as the drive seeks in order to figure out if the disk in the drive is bootable media or if there's even a disk in the drive. It makes installing boot-level media far easier, however.
If you know what you're doing and know how to manually open the boot menu without going into setup, then set your hard disk as your first boot device, followed by your optical media drive, then finally any other medium such as floppy drive, removable media, etc.
Ethernet
ETHERNET
Technician computer
automatic
automatic
Nothing. But, "Windows Deployment Service" does exist.
An LTI deployment provides greater flexibility than a ZTI deployment.
an answer file
1. Build a deployment share 2. Perform a reference computer installation 3. Capture an image of the reference computer 4. Boot the target computers 5. Apply the Windows 7 reference computer image
dhcp
The Windows Recovery console: http://support.microsoft.com/kb/314058
Computer Configuration node, Windows settings folder, security settings node.
Windows Deployment Services
Set the unique device ID.