【导读】
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1. [单选题]路由器上，设置端口速率的命令是（）
A. clock rate
B. bandwidth
C. set
D. encap
2. [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)
A. To determine the status of network services on a remote device
B. To obtain the IP Address of a connected device in order to telnet to the device
C. To verify the type of cable interconnecting two devices
D. To verify Layer 2 connectivity between two devices when Layer 3 fails
E. To obtain VLAN information from directly connected swticehs
F. F. To determine the status of the routing protocols between directly connected routers
G. G. To support automatic network failover during outages
3. [单选题]为了阻止交换机环路，交换机上所采用的技术为（）
A. 水平分割
B. 生成树协议
C. 触发更新
D. 地址学习
4. [单选题]下面有关交换机的描述中，正确的是（）
A. 所有交换机都支持VLAN功能
B. 交换机端口数量最多为48口
C. 交换机独占带宽
D. 交换机端口的最大速率为100Mbit/s
5. [单选题]为了使配置私有IP的设备能够访问互联网，应采用的技术是()
A. NAT
B. VLAN
C. ACCESS-LIST
D. DDR
