Refer to the exhibit. Router R1 is connected to networks 172.16.1.0 /26 and
172.16.1.64 /27. On the basis of the partial outputin the exhibit, which statement is true?
R1#show running-config
<Output omitted>
!
router eigrp 100
network 172.16.0.0
distribute-list prefix TEST out
auto-summary
no eigrp log-neighbor-changes
!
ip prefix-list TEST seq 5 permit 172.16.1.0/26
!
<Output omitted>

A.
Router R1 will advertise both routes.

B.
Router R1 will deny the 172.16.1.0/26 route while permitting the 172.16.1.64/27 route to
be advertised.

C.
Router R1 will deny the 172.16.1.0/27 route while permitting the 172.16.1.0/26 route to
be advertised.

D.
Router R1 should be reconfigured with an ACL instead of an ip prefix-list command.

Explanation:
Prefix lists are configured with permit or deny keywords to either permit or deny the prefix
based on the matching condition. A prefix list consists of an IP address and a bit mask. The
IP address can be a classful network, a subnet, or a single host route. The bit mask is
entered as a number from 1 to 32.
Prefix lists are configured to match an exact prefix length or a prefix range. The ge and le
keywords are used to specify a range of the prefix lengths to match, providing more flexible
configuration than can be configured with just the network/length argument. The prefix list is
processed using an exact match when neither ge nor le keyword is entered.
Therefore in this case the exact 172.16.1.0/26 network is permitted while other networks are
denied.