How does AES$-$CCMP help secure wireless networks? Select two.

a$.$

The code could be cracked in less than $7$ hours if the router is using $802\mathrm{.}11$b$.$

b$.$

The supported secret key is limited to a length that cannot exceed $40$ bits.

c$.$

It combines a $24-$bit IV with the secret key to generate a random number.

d$.$

The combination of the IV and the default key cannot exceed $64$ bits.

e$.$

Specifying the shared secret key on both devices increases the attack surface.