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單項(xiàng)選擇題What is one reason that WPA encryption is preferred over WEP?（）

A.A WPA key is longer and requires more special characters than the WEP key.
B.The access point and the client are manually configured with different WPA key values.
C.WPA key values remain the same until the client configuration is changed.
D.The values of WPA keys can change dynamically while the system is used.

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A.255.255.255.0
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E.255.255.255.254

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2.單項(xiàng)選擇題Which additional configuration step is necessary in order to connect to an access point that has SSID broadcasting disabled?（）

A.Set the SSID value in the client software to public.
B.Configure open authentication on the AP and the client.
C.Set the SSID value on the client to the SSID configured on the AP.
D.Configured MAC address filtering to permit the client to connect to the AP.

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3.單項(xiàng)選擇題 根據(jù)下圖，Switch-1需要往一臺(tái)MAC地址為00b0.d056.efa4的主機(jī)發(fā)數(shù)據(jù)，Switch-1會(huì)如何處理這些數(shù)據(jù)？（）

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B.Switch-1會(huì)防洪該數(shù)據(jù)到所有的接口，除了該數(shù)據(jù)的源接口
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4.單項(xiàng)選擇題 根據(jù)下圖，哪個(gè)交換機(jī)為打印機(jī)提供了生成樹(shù)中的指定端口角色？（）

A.Switch1
B.Switch2
C.Switch3
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5.多項(xiàng)選擇題What functions do routers perform in a network (Choose two.)（）。

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