$1-$ Consider the network shown in figure $1.$

Given the following IP address, $192\mathrm{.}168\mathrm{.}0\mathrm{.}0/21.$

Specify the network addresses, subnet masks, first and last usable IP addresses, broadcast addresses, and gateway addresses of all LANs and interfaces to make the network operational. Use CIDR to solve the problem. Assume the public IP address is $1\mathrm{.}2\mathrm{.}3\mathrm{.}4$

$\backslash$table$[[$LAN$,$Hosts per LAN$],[1,450],[2,1010],[3,254],[4,277],[5,150],[6,10-40$