By default， on the WLAN controller for a voice application using Cisco 7921 wireless IP phones， what is thepercentage of RF bandwidth that can be dedicated to the phones？（）

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• By default，on the wlan controller for a voice application using cisco 7921 wireless ip phones. what is the percentage of rf bandwidth that can be dedicated to the phones？（）

  A . 75 percent B . 85 percent C . 56 percent D . 55 percent

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• A user is unable to determine the default system texteditor.How can the local administrator assist the user by identifying the default text editor for the system？（）

  A.Login as the user and run ‘echo $ENV‘. B.Login as root and run the ‘env‘ command. C.Login as root and ‘cat /etc/environment‘. D.Login as the user and run the ‘env‘ command.

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