In 1999, the IEEE 802.11a standard was developed. The standard specifies that the WLAN operating frequency band is 5.15 to 5.825 GHz, and the data transmission rate reaches 11 Mbps.

• A.False
• B.True

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About the AP access control mode, which of the following statements is wrong? (Multiple choice)

• A.By configuring the AP offline also need certification before they can automatically access
• B.If the AP uses the MAC access control authentication, MAC authentication list outside the AP can also let the on-line manual confirmation
• C.the white list based on MAC authentication, the authentication can be based on the SN
• D.By default AP under the control of the access method is not AC Certification

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What are the common troubleshooting methods in WLAN networks? (Multiple choice)

• A.Replacement troubleshooting method
• B.Segmentation troubleshooting method
• C.Block troubleshooting method
• D.Classification troubleshooting method

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The following command can be used to configure the port of the Huawei switch to be in hybrid mode.

• A.hybrid enable
• B.s wichport hybrid
• C.port link-type hybrid
• D.port mode hybrid

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What are the general methods for solving co-channel interference (ABD) (Select 3 Answers).

• A.Adjust AP transmit power and adjust antenna feed
• B.Reasonable frequency reuse to ensure that the same channel does not appear in the same or adjacent coverage area
• C.Multi-directional coverage using omnidirectional antennas
• D.Natural isolation using obstacles

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