Cisco Exam Questions

Which of the following access-list entries on the outside gateway router would prevent spoof attacks

The addresses on the inside of a packet-filtering router are configured from the network 10.0.0.0/8. Which of the following access-list entries on the outside gateway router would prevent spoof attacks to this network?

A.
access-list 101 deny ip 10.0.0.0 0.0.0.255 0.0.0.0 255.255.255.255

B.
access-list 101 deny ip 10.0.0.0 255.0.0.0 0.0.0.0 0.0.0.0

C.
access-list 101 deny ip any 10.0.0.0 255.255.255

D.
access-list 101 deny ip 10.0.0.0 0.255.255.255 any