Refer to the exhibit. Examine the partial configuration and the routing table excerpt. Which routes would be redistributed into OSPF area 1?
Select the best response.
A.
10.10.10.16/28 only
B.
10.10.10.16/28 and 10.10.10.64/26
C.
10.10.10.16/28, 10.10.10.64/26, and 172.16.10.0/24
D.
10.10.10.64/26 only
Answer: B (but in the exam you should choose D)
Explanation
The network 172.16.10.0/24 belongs to OSPF (we know from the “network 172.16.0.0 0.0.255.255 area 1″ command) so it will not be redistributed.
When using the “subnets” keyword, all the connected networks will be redistributed so 10.10.10.16/28 & 10.10.10.64/26 will be redistributed, too. You can read my GNS3 lab about this topic here: http://www.digitaltut.com/redistribute-eigrp-and-ospf-gns3-lab.
Therefore the correct answer should be B but in the exam you should choose D. Maybe it is a mistake of Cisco.
Answer: D is correct.
Redistribution works only for routes which are present in routing table.
In this case redistribution works only for EIGRP, not for static routes or other.
There are 10.10.10.16/28 and 10.10.10.64/26
But only route 10.10.10.64/26 from EIGRP. “D” symbol
Router uses a subnet mask from Interface configuration, not from line Network 10.0.0.0
@Juri
Labbed and confirmed B is correct
Even though 10.10.10.16/28 is stated as C, it is still part of the EIGRP routing due to the network 10.0.0.0 config.