Which of the following statements about the election of the network DR is correct?

OSPFV2 is an IGP running on an IPV4 network; OSPFv3 is an IGP running on an IPV6 network. The basic working mechanism of OSPFv3 is the same as that of OSPFv2, such as the election of DR and BDR.

As shown in the figure, an engineer uses three routers to test IPv6 services. He wants to realize the interconnection of IPv6 networks by running OSPFv3.

Which of the following statements about the election of the network DR is correct?
A . After the network converges, the engineer changes the priority of R1 to 100, the priority of R2 to 10, and the default value of R3. When the network converges again, R1 is the DR
B. After the network converges, a new device R4 is added to the broadcast link
C. After the network converges, R1 is powered off and restarted, and when the network converges again, R3 is the DR
D. After the network converges, R1 is the DR

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Answer: C