Satellite 940 1134 now the second wireless internet

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Satellite 9:40-11:34 Now the second wireless Internet connection type we need to talk about is satellite internet. This option uses a satellite dish to connect to the Internet using orbiting satellites. Now this type of Internet connection is well suited to remote locations where other types of Internet connectivity is not available. In fact, satellite Internet is the only internet service that isn't dependent upon your location. It's available anywhere in the world as long as there's a clear line of sight to the sky. Now satellite Internet access can provide reasonably fast download speeds. However, upload speeds are usually painfully slow. Now satellite Internet connections also typically experience excessive latency, meaning it takes a long time for data to travel through the satellite network. And this is because the signal has to travel a very long distance. For example, let's say a computer that's using a satellite Internet connection sends a request to access a website. Now that request needs to be sent all the way up to a satellite, which is orbiting the Earth, usually at an altitude of about 22,000 miles. The satellite needs to then send that signal back down another 22,000 miles to the provider's receiving system, the requested information then makes the same journey from the web server back to the source computer following the same path. And frankly, because of the distances involved, it takes a long time to complete and as such satellite Internet is a very poor choice for time-sensitive applications such as computer games, voice data, and video calls. So these are the different types of Internet connectivity that are available for connecting residential and small businesses to the internet. Now in a lot of locations you'll be able to choose between all of these Internet connectivity types and be able to base your decision on speed, cost, and quality of service. However, in some locationsyou're going to have very limited options. For example, your choice might be limited to either DSL or dial-up, and if that's the case your decision should be pretty easy to make. Summary 11:35-11:44 That's it for this lesson. In this lesson, we discussed the options available to you to establish an Internet connection. We looked at dial-up, we looked at DSL, cable, fiber optic, mobile broadband, and satellite connectivity. The following table lists various services you can use to connect to the Internet: Method Description Dial-up A dial-up connection uses a modem connected to the phone line to connect to the Internet. Dial-up connections use the public switched telephone network (PSTN). Phone lines are sometimes referred to as POTS (plain old telephone service). Multiple standards define how to send digital data over the analog phone lines at various speeds and compression ratios.
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  • Spring '14
  • Computer network, Local area network, Network topology, Metropolitan area network

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