Your local high school has challenged you to them challenge their students by building such a stone supercomputer with them. no, they don't have all 128 of those old pc/xts sitting around just maybe only a dozen to start with. but if they can make it work with this year's students, they'd love to keep growing it. what sort of network design do you want to recommend that they look at -- knowing that none of them can afford to buy a 128-port switch or router right up front? how could your network grow to accommodate this project? does allowing / encouraging the use of wireless as well as wired switches and routers you do this, or only make things more complicated and run slower?