一台路由器输出信息如下,下列说法正确的是?<R1>display ospf interface Gigabitethernet 0/0/0
OSPF Process 1 with Router D 10.1.1.1
Interface: 10.0.12.1(Gigabitetherneto/0/0)
Cost: 1 State: DR Type: Broadcast MTU: 1500
Priority: 1
Designated Router: 10.0.12.1
Backup Designated Router: 10.0.12.2
Timers: Hello 10, Dead 40, Poll 120, Retransmit 5, Transmit Delay 1
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