TELECOMMUNICATIONS SYSTEMS
TYPES OF NETWORKS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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They use wi-fi to connect radio towers to phones
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They use wi-fi and Bluetooth to connect radio towers to phones
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They use wireless signals to connect radio towers and satellites to phones
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They use wired signals to connect radio towers and satellites to phones
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Detailed explanation-1: -The signal from your device transmits directly to the nearest satellite, which then sends the signal to the nearest gateway, or land-based center, which then transmits the signal to the receiving phone; the receiving phone can be a land line, cell phone or another sat phone.
Detailed explanation-2: -Whenever a cell phone is used, it emits an electromagnetic radio wave, called a radio frequency, that is received by the nearest cell tower’s antenna. Once the cell tower receives this signal, it will transmit the signals to a switching center.
Detailed explanation-3: -Mobile phones work by sending and receiving low power radio signals, much like a 2 way radio system. The signals are sent to and received from antennas that are attached to radio transmitters and receivers, commonly referred to as mobile phone base stations.
Detailed explanation-4: -Towers are usually connected to a data center via underground cables. That allows it to send and receive data to and from the data center. Connecting each tower with a cable could be challenging, especially in rural areas. Therefore, some towers have these big antennas that use microwaves instead of radio waves.