2022思科认证每日一练(08月08日)

1. [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

2. [单选题]在OSPF的完全存根区域中，使用以下哪种LSAType报文或其它方式与区域间通信：（）

A. LSAType1.2
B. LSAType3
C. LSAType4
D. 默认路由：0.0.0.0

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

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