单项选择题

The output of the show aaa domain-map displays the following information:
Domain: isp1.com; virtual-router: vr1; loopback: 1
Domain: isp2.com; virtual-router: vr2; loopback: 1
Domain: none; virtual-router: vr3; loopback: 1
Domain: default; virtual-router: vr4; loopback: 1
The end user supplies a login name of joe@isp7.com .
Which virtual router is responsible for authenticating this user?（）

A. vr1
B. vr2
C. vr3
D. vr4

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单项选择题

The output of the show aaa domain-map displays the following information:
Domain: isp1.com; virtual-router: vr1; loopback: 1
Domain: isp2.com; virtual-router: vr2; loopback: 1
Domain: none; virtual-router: vr3; loopback: 1
Domain: default; virtual-router: vr4; loopback: 1
The end user supplies a login name of joe with no domain name.
Which virtual router is responsible for authenticating this user?（）

A.vr1
B.vr2
C.vr3
D.vr4

单项选择题

When does the E-series router start monitoring DHCP traffic using the DHCP External function?（）

A. When the discovery packet enters the router from the DHCP client.
B. Only when the offer packet enters the router from the DHCP server.
C. When the acknowledge packet enters the router from the DHCP server.
D. Only when the discovery packet leaves the router going to the DHCP server.

单项选择题

Which CLI command is used to display the IP address assigned to Dynamic Subscriber Interface and related hardware address using the DHCP Relay Proxy function?（）

A. show ip dhcp external
B. show dhcp binding relay-proxy
C. show ip dhcp binding relay-proxy
D. show dhcp relay proxy binding