2.$2.$ Answer the below questions:

a)$)$ What kind of events and actions happen during the $$Fast Recovery$$ phase of TCP?$?$

b)$)$ Are $$Transport$$ and $$Logical Link Control$$ layer protocols similar? Why?

c)$)$ Is it possible to design a network without a $$Network$$ layer? Why?

d)$)$ A network admin is asked to design a network having class C address, 192.168.5.0.$192.168\mathrm{.}5\mathrm{.}0.$ The admin want to design the network with 6$6$ subnets. A)$)$ Define the subnet mask of a host having 192.169.5.121$192\mathrm{.}169\mathrm{.}5\mathrm{.}121$ IP number. B)$)$ Provide the broadcast address of this host.