a$.74\mathrm{.}221\mathrm{.}50\mathrm{.}227$

b$.192\mathrm{.}168\mathrm{.}0\mathrm{.}0$

c$.10\mathrm{.}10\mathrm{.}1\mathrm{.}20$

d$.256\mathrm{.}250\mathrm{.}100\mathrm{.}1$

e$.169\mathrm{.}254\mathrm{.}1\mathrm{.}2\_\_\_\_\_\_$ an internal private IP address

$\_\_\_\_\_\_$ an internal private IP address often used for home users.

$\_\_\_\_\_\_$ a reserved IP address used when your computer is not assigned an IP address

$\_\_\_\_\_\_$ a valid IP address routable on the Internet

$\_\_\_\_\_\_$ an invalid IP address is not routable on the network