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单选题
802.11a、802.11b和802.11g的区别是什么?()
A
802.11a和802.11b都工作在2.4GHz频段,而802.11g工作在5GHz频段
B
802.11a具有最大54GHbps带宽,而802.11g和802.11b只有1Mbps带宽
C
802.11a的传输距离最远其次是802.11b,传输距离最近的是802.11g
D
802.11a可以兼容802.11b,但802.11a和802.11b不能兼容
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更多 “单选题802.11a、802.11b和802.11g的区别是什么?()A 802.11a和802.11b都工作在2.4GHz频段,而802.11g工作在5GHz频段B 802.11a具有最大54GHbps带宽,而802.11g和802.11b只有1Mbps带宽C 802.11a的传输距离最远其次是802.11b,传输距离最近的是802.11gD 802.11a可以兼容802.11b,但802.11a和802.11b不能兼容” 相关考题
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考题
单选题Which statement describes the call behavior of the Cisco Unified Wireless IP Phone 7921G when it roams from 802.11b to 802.11a?()A
The phone does a directed call hangup on 802.11b,then does an auto-redial on 802.11a,creating a new call.B
The phone does a directed call hangup on 802.11b, then the user does a redial on 802.11a,creating a new call.C
The phone does a disassociation on 802.11b and an association on 802.11a,and call remains up if the subnet has not changed.D
The phone does not roam from 802.11b to 802.11a when on an active call.E
The phone must switch network profiles to roam from 802.11b to 802.11a.
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