正确答案: E

They provide inter-switch VLAN communication.

题目：You need to decide on which trunking method to implement in the Ezonexam network. What is a characteristic of ISL and 802.1q frame. tagging in a switched LAN environment?

解析：解析：Explanation: A trunk link is the other type of Layer 2 port supported on Cisco switches. When a trunk port is configured, it begins marking frames as they exit the port to indicate which VLAN each frame. is associated with.

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学习资料的答案和解析：

[单选题]下列哪一个通配符掩码与子网172.16.64.0/27的所有主机匹配（）。

0.0.0.31

[单选题]通配符掩码和子网掩码之间的关系是（）。

两者没有什么区别

[单选题]路由器的配置文件startup-config存放在()里

NVRAM

[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号为（）

192.168.80.64

[单选题]查看E0端口配置信息的命令是：()

show interfacee0

[单选题]如果网络中的路由器都是cisco路由器，则优先选择哪一个路由协议（）

EIGRP

[单选题]OSI七层模型中，数据链路层的数据封装名称为（）

帧

[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: