What kind of address should David assign to the new Web server if he is installing a new Web server at the office, but doesn’t want DHCP giving it a new IP address every time he has to reboot it during maintenance?

Static addresses are those that are allocated and inserted manually into a device. DHCP will be effectively disabled as a result of this. As a best practice, he should also reserve the IP address in the DHCP pool to avoid it from being leased to another device.