多项选择题

Which two devices can interfere with the operation of a wireless network because they operate on similar frequencies?（）

A.copier
B.microwave oven
C.toaster
D.cordless phone
E.IP phone
F.AM radio

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多项选择题

A single 802.11g access point has been configured and installed in the center of a square office. A few wireless users are experiencing slow performance and drops while most users are operating at peak efficiency. What are three likely causes of this problem?（）

A. mismatched TKIP encryption
B. null SSID
C. cordless phones
D. mismatched SSID
E. metal file cabinets
F. antenna type or direction

多项选择题

What are two security appliances that can be installed in a network?（）

A.ATM
B.IDS
C.IOS
D.IOX
E.IPS
F.SDM

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