Wireless Modems Vs. Wireless Network Cards
When putting together a network of computers for your home or business, you will encounter a wide range of technology that will allow your PCs to "talk" to one another. Two of these items are wireless modems and wireless network cards (often referred to as "adapters").
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Modem Basics
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A wireless modem is an external device that conveys information between your computer and the Internet. Whenever you click on a link in your Internet browser, that triggers a request that goes through your modem, retrieves the item on the Internet that the link points to, and sends that item back through the Internet to your computer screen.
Network Card Basics
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The network card is a component in your computer that takes the information from your external modem and puts it in your Internet browser. Without a network card, your computer cannot communicate with this modem.
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Card and Modem Interaction
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A modem is required to connect to the Internet, and a network card is required to communicate with a modem. Without both of these in place, your computer cannot interact with the Internet.
Wireless Networks
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If there are other wireless modems sufficiently close to your wireless network card, then you may be able to interact with them instead, assuming those other networks are not password protected on a secure network.
Wireless Security
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Your wireless modem should be password-protected to prevent unauthorized computers from accessing it and your network.
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