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单选题
Which of the following wireless technologies can operate at only 5GHz?（）
A
802.11b/g
B
802.11g
C
802.11b
D
802.11a
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单选题Which of the following wireless technologies can operate at only 5GHz?（）A
802.11b/gB
802.11gC
802.11bD
802.11a
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SSLB
WPAC
WEPD
TLS
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controller-based mode onlyB
either standalone mode or controller-based modeC
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单选题Which of the following wireless standards uses the 5GHz frequency?（）A
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802.2C
802.11aD
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The WAP is using 802.11a frequencies.C
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MAC filteringB
Disable DHCPC
Static IP addressesD
Port forwarding
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单选题Which of the following wireless technologies can support the GREATEST distance on either 2.4GHz or 5GHz frequencies?（）A
802.11aB
802.11bC
802.11gD
802.11n
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