正确答案: C

DLCI

题目：帧中继环境下，为了区分虚电路，应该使用的地址是（）

解析：C

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学习资料的答案和解析：

[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)

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

[单选题]在路由器上，命令show access-list的功能是（）

显示访问控制列表内容

[单选题]IP地址为：192.168.50.70，掩码为：255.255.255.248，则该IP地址所在子网的子网有效IP为（）

192.168.50.65---192.168.50.70

[多选题]在配置帧中继子接口时，在物理接口上应该配置的内容是：()

封装帧中继协议

指定子接口类型

设定子接口

解析：BCD

[单选题]路由器当前的模式为“端口模式”，要退回到“特权模式”，应该使用的快捷键为（）

ctrl+z

[单选题]The Ezonexam corporate LAN consists of one large flat network. You decide to segment this LAN into two separate networks with a router. What will be the affect of this change?

It will prevent segment 1's broadcasts from getting to segment 2.

解析：解析：Explanation

[单选题]A Ezonexam PC has the IP address 172.16.209.10 /22. What is the subnet of this address?

172.16.208.0

解析：解析：Explanation:

[单选题]What is the purpose of the Spanning Tree Protocol (STP)?

To maintain a loop-free Layer 2 network topology

解析：解析：Explanation: