The network administrator configures the Huawei router RTA as shown in the figure. If a user needs to be authenticated in the authentication domain "huawei", which of the following descriptions is correct?

The network administrator configures the Huawei router RTA as shown in the figure. If a user needs to be authenticated in the authentication domain "huawei", which of the following descriptions is correct?

[RTA] aaa

[RTA-aaa] domain huawei

[RTA-aaa-domain huawei] authentication-scheme au1

[RTA-aaa domain-huawei] authentication-scheme au2
A . will use "authentication-scheme au1" authentication
B. "authentication-scheme au1" authentication will be used, if "au1" is removed, "au2" authentication will be used
C. "authentication-scheme au2" authentication will be used, if "au2" is removed, "au1" authentication will be used
D. will use "authentication-scheme au2" authentication

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Answer: D