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單項選擇題

What speeds must be disabled in a mixed 802.11b/g WLAN to allow only 802.11g clients to connect?（）

A. 6, 9, 12, 18
B. 1, 2, 5.5, 6
C. 5.5, 6, 9, 11
D. 1, 2, 5.5, 11

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單項選擇題

Which port state is introduced by Rapid-PVST?（）

A. learning
B. listening
C. discarding
D. forwarding

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What is the name of the VTP mode of operation that enables a switch to forward only VTP advertisements while still permitting the editing of local VLAN information?（）

A. server
B. client
C. tunnel
D. transparent

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