You get a call from a network administrator who tells you that he typed the following into his router:Router (config) #router ospf 1Router (config-router) #network 10.0.0.0 255.0.0.0 area 0He tells you he still can't see any routes in the routing table. What configuration error did the administrator make?

• A. The OSPF area is wrong.
• B. The OSPF Process ID is incorrect.
• C. The AS configuration is wrong.
• D. The wildcard mask is incorrect.

Answer: (D)