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Exam 200-105 Question id=1925 Routing Technologies

A network associate has configured OSPF with the command:
City(config-router)# network 192.168.12.64 0.0.0.63 area 0
Refer to the exhibit.
City#show ip interface brief Interface IP-Address OK? Method Status Protocol FastEthernet0/0 192.168.12.48 YES manual up up FastEthernet0/1 192.168.12.65 YES manual up up Serial0/0 192.168.12.121 YES manual up up Serial0/1 unassigned YES unset up up Serial0/1.102 192.168.12.125 YES manual up up Serial0/1.103 192.168.12.129 YES manual up up Serial0/1.104 192.168.12.133 YES manual up up City#
After completing the configuration, the associate discovers that not all the interfaces are participating in OSPF. Which three of the interfaces shown in the exhibit will participate in OSPF according to this configuration statement?

A. FastEthernet0/0
B. FastEthernet0/1
C. Serial0/0
D. Serial0/1.102
E. Serial0/1.103
F. Serial0/1.104

The network 192.168.12.64 0.0.0.63 equals to network 192.168.12.64/26. This network has:
Increment: 64 (/26= 1111 1111.1111 1111.1111 1111.1100 0000)
Network address: 192.168.12.64
Broadcast address: 192.168.12.127
Therefore all interface in the range of this network will join OSPF - B C D are correct