单选题In JUNOS software, which statement is true regarding the OSPF advertisement of the loopback IP address on the ABR?（）AWhen Area 0 is active, the loopback interface must be configured in OSPF for it to be advertised.BWhen Area 0 is active, the loopback address is automatically advertised into other areas.CWhen Area 0 is active, the OSPF router-id must match the loopback address for the loopback address to be advertised.DWhen Area 0 is active, the router-id must be configured for the loopback address to be advertised.
单选题
In JUNOS software, which statement is true regarding the OSPF advertisement of the loopback IP address on the ABR?（）
A
When Area 0 is active, the loopback interface must be configured in OSPF for it to be advertised.
B
When Area 0 is active, the loopback address is automatically advertised into other areas.
C
When Area 0 is active, the OSPF router-id must match the loopback address for the loopback address to be advertised.
D
When Area 0 is active, the router-id must be configured for the loopback address to be advertised.
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