$2$a$.$ Find the following quantities for the common base network shown in Figure $2.$ For the Q$1$ transistor, ${}_{ac}=110,$ and $I_E=36uA.$

Figure $2.$

$r^{\text{'}}$

$A_{V-N}$

Z $$

$Z_0$

$2$b$.$ Draw the schematic for the $2-$Port Model of the common base network in Figure $2.$