Refer to the partial configurations in the exhibit. What address is utilized for DR and BDR
identification on Router1? Select the best response.

A.
the serial 1/1 address

B.
the serial 2/0 address

C.
a randomly generated internal address

D.
the configured router-id address

Explanation:
The point of this question is DR and BDR election of OSPFv3.
OSPF test the title of the DR and BDR election.
DR and BDR election there are two standards:
1. Interface priority, the default is 1.
2. Router-id: manually specify> Highest loopback interface> Highest active IP address
This title, there is no priority list, it is the default, manually specify the Router-id: 10.1.1.3, so
hand-Router-id specified in the election has become the standard DR and BDR.
The selection of DR and BDR is the same between OSPFv2 and OSPFv3.