What are three characteristics of satellite Internet connections? (Choose three)

Question:
What are three characteristics of satellite Internet connections? (Choose three)

• A. Their upload speed is about 10 percent of their download speed.
• B. They are frequently used by rural users without access to other high-speed connections.
• C. They are usually at least 10 times faster than analog modem connections.
• D. They are usually faster than cable and DSL connections.
• E. They require a WiMax tower within 30 miles of the user location.
• F. They use radio waves to communicate with cellular phone towers.

Explanation: Many rural areas do not have cable Internet access and their only choice to connect to the Internet is via satellite. Satellite internet leverages the hundreds of satellites in orbit around the Earth to send and receive data over the Internet. Of course the speed of this type of connection is much slower than DSL and cable connections. But with new technologies, satellite connections may achieve data speed up to 50 Mbps -> B is correct, D is not correct.In general, the speeds of popular types of Internet connections are like this: DSL/cable > satellite Internet > dial-up (analog modem).Satellite Internet uses satellite for Internet connection -> E is not correct
Satellites use radio waves to communicate with the customer’s gateway, also known as a ground station (like a customer’s satellite dish), but not with cellular phone towers -> F is not correct.

For your information, satellite Internet uses high frequency signals, which range from 18.3 gigahertz to 31 gigahertz (Ka band).

Answer A C are two options left and they are acceptable answers. Although in practical they may vary a lot.

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