多选题The TestKingA router is configured as shown below: TestKingA(config)# interface loopback 0 TestKingA(config-if)# ip address 192.168.16.24 255.255.255.255 As a result of this change, which of the statements below are true?（）AIt creates a virtual, software only, interface.BIt provides a way to test the convergence of OSPF routing updates.CThe mask of 255.255.255.255 is called a host mask.DIt uses a wildcard mask of 255.255.255.255.EIt ensures that an interface is always active for OSPF processes.FLoopback interfaces must be numbered 0.
多选题
The TestKingA router is configured as shown below: TestKingA(config)# interface loopback 0 TestKingA(config-if)# ip address 192.168.16.24 255.255.255.255 As a result of this change, which of the statements below are true?（）
A
It creates a virtual, software only, interface.
B
It provides a way to test the convergence of OSPF routing updates.
C
The mask of 255.255.255.255 is called a host mask.
D
It uses a wildcard mask of 255.255.255.255.
E
It ensures that an interface is always active for OSPF processes.
F
Loopback interfaces must be numbered 0.
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