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  1. Which of the following mobile telephone network is not based on GSM technology?
    1. Idea
    2. BPL Mobile
    3. Airtel
    4. Reliance Infocomm
Correct Option: D

GSM stands for Global System for Mobile Communications. Just like computers, mobile phones have evolved over time. There were first generation mobile phones in the 70’s, there are 2nd generation mobile phones in the 80’s and 90’s, and now there are 3rd gen phones which are about to enter the Indian market. GSM is called a 2nd generation, or 2G communications technology. Idea, Airtel, and BPL Mobile are based on GSM technology while Reliance Infocommis not based on GSM technology.


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