Configuring the router as a DHCP server was easy, at least for Maurice, because he read the documentation carefully and wasn’t afraid to look for help on the Web. (He did need to make sure the internal routers he installed on Day 2 were configured to pass on the DHCP information.) The hard part was manually configuring each of the 1,000 computers to access the DHCP server and receive an IP address dynamically. To configure the 1,000 computers in an 8-hour day, he had to configure 125 computers per hour, or a little more than 2 per minute. This would have been nearly impossible for anyone but Maurice. He knocked several people down, but he finished in time for the 6:00 p.m. bus.
As simple and basic the idiom to knock someone down may sound, I don't think I really understand what exactly it means in this particular context.