1. A BGP policy needs to be configured to filter all the /20 prefixes whose first two octets are 20.128.
Which of the following answers would provide the correct matching logic for the
filtering process, matching only the described subnets and no others?
a. access-list 1 deny 20.128.0.0 0.0.255.255
b. access-list 101 deny ip 20.128.0.0 0.0.255.255 host 255.255.240.0
c. ip prefix-list 1 deny 20.128.0.0/16 eq 20
d. ip prefix-list 2 deny 20.128.0.0/16 ge 20 le 20
Author's answer is B and D. A seems obvious as it's an exact ip match without a prefix.
However C also seems correct to me.
Why doesn't C work?
