I was solving this question:
The 192.168.0.0 network is not being propagated throughout the network. Observe the BGP configuration commands from the advertising router. What is the reason the 192.168.0.0 route is not being advertised?
|router bgp 65111
neighbor 172.16.1.1 remote-as 65111
neighbor 172.16.2.1 remote-as 65112
ip route 192.168.0.0 255.255.0.0 null0
A. The network 192.168.0.0 statement is missing mask 255.255.0.0
B. The network 192.168.0.0 statement is missing mask 0.0.255.255.
C. The network 10.0.0.0 statement is missing mask 255.0.0.0.
D. The network 10.0.0.0 statement is missing mask 0.255.255.255.
E. The auto-summary configuration is missing.
the answer is A as I chose, but I really did not understand it well because of "ip route 192.168.0.0 255.255.0.0 null0"
if this statement will put the network into null0 and at the same time use to advertise the network to BGP routers, that means this router will tell the others BGP routers if you want to reach network 192.168.0.0/16 , send it to me and I will drop it !!!
which really does not make sense !