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Which of the following frequencies is not used in WiMAX for communication?

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Which of the following frequencies is not used in WiMAX for communication?

(a) 2.3 GHz

(b) 2.4 GHz

(c) 2.5 GHz

(d) 3.5 GHz

This question was addressed to me during an interview.

Question is taken from WiMAX topic in division Wireless LAN’s, Electronic Mail and File Transfer of Computer Network

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Right option is (b) 2.4 GHz

Easy explanation: The 2.4GHz ISM frequency band is used for personal area network technologies such as Bluetooth and hence is not suitable for WiMAX which is mostly used for Metropolitan Area Networks.

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