[单选题]路由器上“水平分割”的功能是：()

正确答案 ：B

阻止路由环路

[单选题]路由器“全局模式”的提示符为（）

正确答案 ：C

(config)

[单选题]The network administrator has configured port security on a Ezonexam switch. Why would a network administrator configure port security on this Ezonexam device?

正确答案 ：A

To prevent unauthorized hosts from getting access to the LAN

解析：解析：Explanation:

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