正确答案: BCD

封装帧中继协议 指定子接口类型 设定子接口

题目：在配置帧中继子接口时，在物理接口上应该配置的内容是：()

解析：BCD

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举一反三的答案和解析：

[单选题]Assuming you build networks to exact specifications, what is the recommended maximum length a 10BaseT cable can be before it has to be segmented or repeated?

100 meters

解析：解析：Explanation:

[单选题]How can a Ezonexam administrator determine if a router has been configured when it is first powered up?

An un configured router goes into the setup dialog

解析：解析：Explanation:

[单选题]At which layer of the OSI model does the protocol that provides the information displayed by the "show cdp neighbors" command operate?

Data link

解析：解析：Explanation:

[单选题]路由器下“特权用户模式”的标识符是：()

[单选题]Ezonexam has implemented the use of the Virtual Trunking Protocol (VTP). Which statement below accurately describes a benefit of doing this?

VTP will allow switches to share VLAN configuration information

[单选题]SMTP工作在OSI哪一层（）

应用层

[单选题]TCP23是（）协议端口号；UDP69是（）端口号；TCP80是（）端口号。

TELNET TFTP HTTP