正确答案: A

物理层

题目：介质工作在OSI的哪一层（）

解析：A

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举一反三的答案和解析：

[单选题]You are an administrator of the Ezonexam switched network and your goal is to reduce some of the administrative overhead on your network. You plan on achieving this by configuring a new VLAN for each department in the Ezonexam network.However, you need to share the VLAN information across numerous switches. Which of the following would allow you accomplish this?

VTP

解析：D 解析：Explanation:

[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

[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]OSPF的度量值是什么()

链路状态

[单选题]路由器“特权模式”的提示符是：（）

[单选题]关于帧中继的说法，正确的是（）

可以偷占带宽

[单选题]You want to upgrade the Ezonexam LAN so that all ports operate in full duplex mode. Which statement is true about full-duplex Ethernet when comparing to half-duplex Ethernet?

Full-duplex Ethernet can provide higher throughput than can half-duplex Ethernet of the same bandwidth

[单选题]You wish to segment your LAN into multiple broadcast domains. Which technology method should you implement in order to do this?

Virtual LANs

解析：D 解析：Explanation: