Question

Smartphones combine ________ radio technology with specially designed processors. As smartphones have evolved, app developers have found new, ingenious ways to use hardware and wireless connectivity to make information instantly available to users.
1. Digital
2. Analog
3. Cellular
4. GSM

Answer 1

Correct Answer - Option 3 : Cellular

The correct answer is Cellular

• Smartphones combine cellular radio technology with specially designed processors. As smartphones have evolved, app developers have found new, ingenious ways to use hardware and wireless connectivity to make information instantly available to users.
• Cellular communication 
  • Cellular communication is a form of communication technology that enables the use of mobile phones.
  • A mobile phone is a bidirectional radio that enables simultaneous transmission and reception.
  • Cellular communication is based on the geographic division of the communication coverage area into cells and within cells. 
  • Each cell is allocated a given number of frequencies (or channels) that allow a large number of subscribers to conduct conversations simultaneously.

• Most common types of communication technology
  • Global Systems for Mobile (GSM) Communications
  • Code Division Multiple Access (CDMA)
  • Universal Mobile Telecommunication System (UMTS)
  • Long Term Evolution (LTE) using the Orthogonal Frequency Division Multiplexing (OFDM)method
  • Adaptive communication