Modem Vs. Wireless Router
A computer can be connected to the Internet by plugging it directly into a modem or through a router or wireless router that is connected to a modem. Connecting a computer directly to the modem has some advantages over using a wireless router, but there are also a few drawbacks.
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Signal Stability
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Connecting a computer to the modem directly will provide the most stable Internet connection available. If the modem is connected to the Internet, the computer also will be connected. A wireless router should be fast and stable enough that the difference in stability isn't noticeable, but there are some potential roadblocks users may encounter with a wireless router. The wireless reception can be interrupted by portable phones, cell phones and wiring in the walls of your house. Also, if the wireless network is password protected, you will have to enter the password before you connect each time. This adds an extra step to Internet access from using a modem.
Security
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Data transmitted over a wireless network can be accessed by other computers on the network. Normally, this isn't a problem, since it requires significant technical expertise to intercept and interpret the data. Most users of a home network probably don't have much reason to snoop, anyway. But there always is the possibility that someone unknown to you has gained access to the wireless network, and is attempting to access data you transmit over it. With a direct connection to a modem, this sort of signal interception is impossible.
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Virus Attacks
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When a computer is connected to the Internet through a modem, it is effectively connected directly to the Internet. Using a wireless router places an additional level of insulation and security between your computer and any hostile code it might encounter on the Internet. It is easier for a computer to become infected if it is connected directly to a modem. If you are connecting directly to a modem, make sure the computer's antivirus software is current.
Speed
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In most cases, the speed of an Internet connection will be far slower than the maximum speed of a wireless router. Therefore, your browsing experience should be the same speed whether connected directly to a modem or using a wireless network. The only time an Internet connection will be slowed down by a wireless network is when there is extremely poor wireless reception.
Networking
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Modems generally have only one Ethernet port, which is used for plugging in a computer or router. If the computer is connected to the modem directly, it is the only computer in your house that will be able to access the Internet. By using a wireless router, you can connect all your computers to the Internet by using wireless adapters.
Expense
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Most Internet service providers have inexpensive modems available for rent or purchase when you subscribe to their service. Wireless routers, on the other hand, sometimes must be purchased from a retailer. Since a wireless router must connect to the Internet through a modem, you will need both to access the Internet wirelessly. Some companies manufacture a combination router/modem.
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References
Resources
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