<{p}>1.用什么命令可以防止用户在交换机的接入端口上通过HUB接入多个设备<{br/}><{/p}>

【单选题】
A <{p}>[Huawei]interface G i gab i tEthernetO/O/1 [Huawei- G i gab i tEthernetO/O/1]port<{br/}>Ii nk-type trunk [Huawei- Gi gab i tEthernetO/O/1]port trunk a I Iow-pass vI an 10<{br/}><{/p}>
B <{p}>[Huawei]interface G i gab i tEthernet0/0/1 [Huawei- G i gab i tEthernet0/0/1]port<{br/}>Iink-type access [Huawei- GigabitEthernetO/O/1]ipsg enable<{br/}><{/p}>
C <{p}>[Huawei]interface GigabitEthernet0/0/1 [Huawei- GigabitEthernet0/0/1]port<{br/}>Iink-type access [Huawei- GigabitEthernet0/0/1]port-security enable<{br/}><{/p}>
D <{p}>[Huawei]interface G i gab i tEthernet0/0/1 [Huawei- G i gab i tEthernet0/0/1]port<{br/}>Iink-type access [Huawei- GigabitEthernetO/O/1]port isolate enable<{br/}><{/p}>

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