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多項選擇題Which two commands correctly verify whether port security has been configured on port FastEthernet 0/12 on a switch?（）

A.SW1#show swithport port-security interface FastEthernet 0/12
B.SW1# show swithport port-secure interface FastEthernet 0/12
C.SW1# show port-secure interface FastEthernet 0/12
D.SW1#show running-config

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1.多項選擇題實施ACL時應注意的問題（）

A.默認拒絕所有流量
B.不需要配置到具體端口
C.過濾方向
D.語句的次序

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2.多項選擇題The network technician is planning to use the 255.255.255.224 subent mask on the network.which threevalid IP addresses can the technician use for the hosts？（）

A.172.22.243.127
B.172.22.243.191
C.172.22.243.190
D.10.16.33.98
E.10.17.64.34
F.192.168.1.160

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3.多項選擇題擴扎ACL的編號范圍為（）

A.1~99
B.100~199
C.1300~1999
D.2000~2699

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4.單項選擇題A router has two FastEthernet interfaces and needs to connect to four vlans in the local network.How canyou accomplish this task，using the fewest physical interfaces and withoutdecreasing networkperformance？（）

A.Add two more FastEthernet interfaces.
B.Add a second router to handle the vlan traffic.
C.Use a hub to connect the four vlans with a FastEthernet interface on router.
D.Implement a router-on-a-stick configuration.

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5.多項選擇題A network administrator needs to configure port security on a switch.which two statements are true？（）

A.The network administrator can apply port security to dynamic access ports
B.The network administrator can configure static secure or sticky secure mac addresses in the voice vlan.
C.The sticky learning feature allows the addition of dynamically learned addresses to the runningconfiguration.
D.The network administrator can apply port security to EtherChannels.
E.When dynamic mac address learning is enabled on an interface，the switch can learn new addresses，up to the maximum defined.

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