[单选题]查看E0端口配置信息的命令是：()

正确答案 ：D

show interfacee0

[单选题]标准访问控制列表的数字标识范围是（）。

正确答案 ：B

1-99

[单选题]路由器的配置文件startup-config存放在()里

正确答案 ：D

NVRAM

[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?

正确答案 ：D

Data link

解析：解析：Explanation:

[单选题]在OSI七层模型中，介质工作在哪一层()

正确答案 ：C

物理层

[多选题]As the Ezonexam network administrator, you are required to have a firm understanding of the OSI model. Why does the data communication industry use the layered OSI reference model? (Choose two)

正确答案 ：BC

It encourages industry standardization by defining what functions occur at each layer of the model

It divides the network communication process into smaller and simpler components; thus aiding component development, design and troubleshooting

解析：解析：Explanation:

[单选题]The Ezonexam network administrator has just issued the "switchport trunk native vlan 998" command on switch VE2. What is the function of this command?

正确答案 ：B

It designates VLAN 998 for untagged traffic

[单选题]备份路由器IOS的命令是：()

正确答案 ：A

copy flash tftp

[多选题]默认情况下，IGRP衡量路径好坏时，考虑的因素为（）

正确答案 ：AD

带宽

延时

解析：AD

[多选题]CDP is being used throughout the Ezonexam network. What are two reasons why the Ezonexam network administrator would use CDP? (Choose two)

正确答案 ：BD

To obtain the IP Address of a connected device in order to telnet to the device

To verify Layer 2 connectivity between two devices when Layer 3 fails

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