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單項選擇題

Which of the following wireless standards was the FIRST standard to be ratified and is used to support legacy wireless devices?（）

A.802.11a
B.802.11g
C.802.11b
D.802.11n

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單項選擇題

Which of the following is used to create multiple networks from one large network?（）

A.PAT
B.NAT
C.Multicast
D.Subnetting

單項選擇題

Which of the following tools allows an administrator to determine the MAC address of another computer?（）

A.ping
B.arp
C.ifconfig
D.ipconfig

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