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問答題In an ACL cause， what’s the function of log or log-input keyword at the end？

1.問答題What’s the steps of implementing MQC？

2.問答題When would you want to disable souce-route and icmp on a router of interface？

3.問答題Which spanning tree mode will allow you to put multiple vlans into one instance？

4.問答題vtp pruning的purpose是什么？

5.問答題問配置DHCP使得host能夠成功獲得地址的，三個主要條件？