For outdoor WLAN coverage, the following statement is correct (Select 3 Answers).

• A.Outdoor antennas should not blindly pursue high gain
• B.The length of the feeder must not exceed 2 meters.
• C.The feeder interface must match the selected antenna
• D.The higher the antenna gain, the stronger the antenna directivity and the weaker the radiation gain directly below the antenna.

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In the 802.11 frame, what is the correct correspondence between the Type and the frame format in the Frame Control bit?

• A.Type is 01, indicating that the data frame
• B.Type is 10, indicating the control frame. When
• C.Type is 00, it means management frame.
• D.Type is 00, it means reserved. When

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According to the following output, the following statement is correct (Select 3 Answers).
<Quidway> display version
Huawei Versatile Routing Platform Software
VRP (R) software, Version 5.70 (AC6605 V200R001C00)
Copyright (C) 2003-2012 Huawei TECH CO., LTD
Quidway AC6605-PWR Routing Switch uptime is 0 week, 1 day, 23 hours, 33 minutes
H852V26S 0(Master) : uptime is 0 week, 1 day, 23 hours, 33 minutes
512M bytes DDR Memory
128M bytes FLASH
Check the running status of the AC6605.

• A.The equipment has been running continuously for 1 day, 23 hours and 33 minutes.
• B.The total flash size of the device is 128 Mbytes.
• C.Currently the device has used 512 Mbytes of system memory.
• D.display version can see that the VRP version number of today's devices is 5.70.

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What is the wireless client's active scanning to get the surrounding wireless network information by sending frames?

• A.Probe Request frame
• B.Association Request frame
• C.Beacon frame
• D.Authentication Request frame

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With which of the following ways does the antenna get the gain?

• A.Using a power amplifier in an antenna system
• B.Make the antenna radiation more concentrated
• C.Using high efficiency antenna feeders
• D.Equipment using low standing wave ratio

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