[单选题]A Ezonexam switch is configured with all ports assigned to VLAN 2. In addition, all ports are configured as full-duplex FastEthernet. What is the effect of adding switch ports to a new VLAN on this switch?

正确答案 ：D

An additional broadcast domain will be created.

解析：解析：Explanation:

[多选题]下列哪一设备工作时，要用到OSI的七个层（一层到七层）（）

正确答案 ：ABC

PC

网管机

WEB服务器

解析：ABC

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