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An organization has been allocated a block of IP addresses. The IP address

$154\mathrm{.}101\mathrm{.}43\mathrm{.}163$ is the $36$th address in this block. The organization needs $72$ IP addresses

for hosts and routers. $(4$ points$)$

i$.$

Specify the range of IP addresses that have been allocated to this organization.

ii$.$

Is there any wastage in this allocation? If so$,$ calculate the number of IP addresses

that are unused.