You are concerned about attacks against your network, and have decided to implement some defensive measure on your routers. If you have 3 interfaces, S1, S0, and E0, and you implement the following configuration, what attack will you be defending against?
Router#config terminal
Router(config)# Interface Ethernet 0
Router(config-if)#no ip directed broadcast
Router(config-if)#Interface Serial 0
Router(config-if)#no ip directed broadcast
Router(config-if)#Interface Serial 1
Router(config-if)#no ip directed broadcast
Router(config)#^Z
Router#
A.
Smurf
B.
BO2K
C.
SubSeven
D.
Any Trojan
E.
Any Worm