试题详情
- 单项选择题If there is an existing 802.11g WLAN at a site， which service can be provided without conducting anew site survey？（）
A、Add a new 802.11a WLAN
B、Increase the Layer 2 and Layer 3 security of the WLAN
C、Increase the throughput for the wireless clients
D、Add new services （such as voice） over the WLAN
- B
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