单项选择题
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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单项选择题
Which port state is introduced by Rapid-PVST?（）
A. learning
B. listening
C. discarding
D. forwarding -
单项选择题
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 -
单项选择题
Which command will show the MAC addresses of stations connected to switch ports?（）
A. show mac-address
B. show arp
C. show table
D. show switchport
