Refer to the exhibit.
Why is network 172.16.1.0/24 not installed in the routing table?
A.
There is no ARP entry for 192.168.1.1.
B.
The router cannot ping 192.168.1.1.
C.
The neighbor 192.168.1.1 just timed out and BGP will flush this prefix the next time that the BGP
scanner runs.
D.
There is no route for 192.168.1.1 in the routing table.
Here we see that the next hop IP address to reach the 172.16.1.0 network advertised by the BGP
peer is 192.168.1.1. However, the 192.168.1.1 IP is not in the routing table of R3 so it adds the
route to the BGP table but marks it as inaccessible, as shown.
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