Which of the following is a characteristic of 2G mobile networks?
Maximum data transfer rate of 1 Mbps
Operating frequency range of 2.4 GHz
Utilizes CDMA
Support for multimedia messaging (MMS)
2G (Second Generation) mobile networks were the first digital cellular systems introduced in the early 1990s. Two primary radio-interface families were deployed: GSM, which used TDMA/FDMA channelization, and cdmaOne, which used Code Division Multiple Access (CDMA). Because cdmaOne is a 2G standard, the ability to use CDMA air-interface techniques is a valid characteristic of 2G networks. The other options do not describe core 2G capabilities: raw 2G data services were limited to tens of kilobits per second, not 1 Mbps; MMS required packet-data extensions such as GPRS (2.5G) or later; and 2 .4 GHz is a Wi-Fi band, not a cellular band commonly used by 2G.
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