$1.$ Consider you are given the address space $172\mathrm{.}16\mathrm{.}10\mathrm{.}0/23.$ Now you are to subnet the address according to the host requirements for different departments that are given in the following table. Then fill up the empty columns with values resulting from your calculation. Use the smallest subnet sizes that will accommodate the relevant number of

hosts and do not leave any gap $($at the start of given address space or between the subnets$).$

$2.$ An IP packet of size $1600$ bytes passes through a network segment before it reaches its destination. The header size of this packet is $30$ bytes. The maximum size of an IP packet in the intermediate network $($MTU$)$ is $1400$ bytes. How the IP packet would be fragmented in a router? Find all the information for each fragment.

$3.$ A router has the following $($CIDR$)$ entries in its routing table:

For each of the following IP addresses, what does the router do if a packet with that address arrives?

a$.135\mathrm{.}46\mathrm{.}63\mathrm{.}10$

b$.135\mathrm{.}46\mathrm{.}57\mathrm{.}14$

c$.135\mathrm{.}46\mathrm{.}52\mathrm{.}2$

d$.192\mathrm{.}53\mathrm{.}40\mathrm{.}7$

e$.192\mathrm{.}53\mathrm{.}56\mathrm{.}7$