How many total valid host addresses will be wasted on the WAN links?

Now come up with a better addressing scheme using VLSM$.$ Start with the

same $4$ bits borrowed from the host portion of $192\mathrm{.}168\mathrm{.}1\mathrm{.}0/24.$ Label each of

the LANs with a subnet. Then subnet the next available subnet to provide WAN

subnets without wasting any host addresses. Label Figure $9-3$ with the

subnets.