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問答題what kind of message in GLBP will inform other membership of GLBP learn virtual mac-address.

1.問答題什么情況會使BGP停止在IDLE（空閑）狀態(tài)？

2.問答題幾臺交換機互聯(lián)，都是client模式，問其中一臺新增一個vlan，結(jié)果會怎么樣？

3.問答題What are the three main types of networks that must be considered when defining a security policy？

4.問答題What is the purpose of the Route Tag field in the RIPv2 message？

5.問答題You are subneting in the network， out of network address，what’s feature can add one more address？