1. A network on the Internet has a subnet mask of 255.255.248.0. What is the maximum number of hosts it can handle? 2. Recap the route aggregation function of CIDR. A router has just been made aware of the routes from the following new IP prefixes: 57.6.96.0/21, 57.6.104.0/21, 57.6.112.0/21, and 57.6.120.0/21. If all of them use the same outgoing line, can they be aggregated? If so, to what? If not, why not?