In the mobile commerce value chain, the infrastructure service providers provide ________.
A. Support services
B. Network operations
C. Access service
D. Content Service
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The third generation mobile communication system (3G) ________.
Adopts analog and frequency division multiple access technology, voice only
B. Adopts digital technology to improve quality and confidentiality
C. Adopts CDMA technology to transmit voice, data and multimedia information
D. Adopts TD-LTE and FDD-LTE technology to quickly transmit multimedia information
The operating system used by Apple mobile phones is ________.
A. Windows Phone
B. Android
C. IOS
D. Symbian
________ is not part of the satellite communication system.
A. Satellite
B. Roaming end
C. Ground station
D. Client
________ belongs to the cellular mobile communication system in the mobile communication network technology is.
A. Wi-Fi
B. WiMax
C. Mobile network
D. Satellite network
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