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單項(xiàng)選擇題

Which of the following would need to be implemented on a wireless router to allow network accessbased on a passphrase that the administrator would supply?（）

A. WPA-PSK encryption
B. SSID broadcast
C. Port forwarding
D. MAC filtering

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單項(xiàng)選擇題

Users are unable to access the Internet but the users are able to send/receive email from theirdesktops. Which of the following ports is MOST likely being blocked?（）

A.25
B.80
C.110
D.143

單項(xiàng)選擇題

When testing a CAT5 cable, the technician notices that pin A is open. However, the cable stillworks fine. Which of the following describes how this is possible?（）

A. The cable was tested for 100Base-TX.
B. The cable is a 1000BaseT cable.
C. The switch uses link aggregation,
D. The switch was setup to use MDIX