Unconventional Wisdom (at least some people would say so)
Never use managed Ethernet hubs or swiches to the desktop
- most of the functionality is never used and they are much more expensive
- exception to this rule: VLANs (Are you really going to do this???)
The only use for Fiber Optics in the LAN is between IDFs and the MDF when the distance is over 300ft
Almost never buy Frame Relay for connecting schools in a single system to each other or to the Internet (Educational T1s are cheaper).