Cisco Exam Questions

How would you characterize the source and type in a denial of service attack on a router?

How would you characterize the source and type in a denial of service attack on a router?

A.
By perform a show ip interface to see the type and source of the attack based upon the accesslist matches

B.
By setting up an access-list to permit all ICMP, TCP, and UDP traffic with the log or log-input
commands, then use the show access-list and show log commands to determine the type and
source of attack

C.
By performing a show interface to see the transmitted load “txload” and receive load “rxload”, if
the interface utilization is not maxed out, there is no attack underway

D.
By applying an access-list to all incoming and outgoing interfaces, turning off route-cache on all
interfaces, then, when telnetting into the router perform a debug IP packet detail