When that signal reaches its destination, the receiving modem will demodulate and decode it back into readable data, and then send a response. Here's a practical example: When you're at home shopping on Amazon and you click "Add to cart," your modem sends that request to Amazon's servers. Then, Amazon responds by sending the confirmation that your bulk order of red gummy bears is, indeed, in your cart.
All of that happens within a fraction of a second, and you see it play out on your screen because your modem is connecting you with Amazon through the web. Thanks, modem! In the early days of the internet, a modem was all most people used to get online. You'd plug your modem into your home phone line for a dial-up connection with your internet service provider, and then you'd wire the modem to your computer to connect that computer to the web. Wired connections to the modem like that are great for a connection that's as fast and reliable as your ISP allows, but they aren't practical if you want to be able to connect from anywhere in your house, or if you want to use things like wireless smart home gadgets.
For that, you'll need a way for those devices to connect to your modem without wires at all. Gee, if only there was a device for that, some way to "route" all of those wireless signals to the right place This Asus router offers wireless access to your modem's connection with the web hence the antennas.
Yep, that's what your router is for. Instead of wiring each of your devices to your modem, you just wire a router to it. From there, that router broadcasts a Wi-Fi network. Any Wi-Fi device in range of that network can use whatever password you've set to connect wirelessly to the router, and through it, to the modem and the web.
That's also why it's important to set a strong password for your network -- without one, anyone within range will be able to use your connection and potentially interfere with other devices.
There's a wide range of Wi-Fi routers available for use in people's homes, and a wide range of strengths and weaknesses between them. Can you tell the difference between a modem and router? Have you ever asked, "do I need a modem and router?
A modem is a device that connects your home, usually through a coax cable connection, to your Internet service provider ISP , like Xfinity. The modem takes signals from your ISP and translates them into signals your local devices can use, and vice versa.
The connection between your house and the Internet is known as a wide area network WAN. Each modem has an assigned public IP address that identifies it on the Internet. You need both, integrated or not, in order to provide an Internet connection for all the devices in your home.
We recommend using a separate modem and router, if you can. You can often save money on your monthly Internet bill if you buy your own modem and router instead of using the ones your ISP provides, though this is usually true only if you have cable Internet, not DSL or fiber, and the situation is more complicated if you get phone service from your ISP as well.
A modem modulates and demodulates electrical signals sent through phone lines, coaxial cables, or other types of wiring; in other words, it transforms digital information from your computer into analog signals that can transmit over wires, and it can translate incoming analog signals back into digital data that your computer can understand. Most stand-alone modems have just two ports: one that connects to the outside world, and an Ethernet jack that connects to a computer or a router. Generally, you'll get one from your ISP, and they'll give you one suitable for your subscription.
If you plug in your computer directly to your modem and run a speed test , you can test whether you're getting your advertised internet speed. If not, contact your ISP. There may be a connection issue, or your modem may be outdated.
In this case, they may swap it out for a newer model. Modems typically look like small black, skinny, square boxes. Frequently, they have between two and four antennae but not every modem includes an external antenna. The images at the top of this article give you a good idea of what a modem looks like but every manufacturer uses a different style and shape. Modems will also include between two and four ethernet ports, one or two USB ports, and range between six and nine inches wide to six to eleven inches long and about two to three inches high.
There are also modems with integrated routers that perform both functions. These modems can be rented from your ISP or purchased directly. These combo devices might include a VoIP function if you have a cable, internet, and phone package. Combination devices are not usually the best option. If one part breaks, the whole thing is useless, and you can't upgrade one device at a time.
Still, if you don't need the latest and greatest tech, buying a combo modem and router is convenient. Actively scan device characteristics for identification. Use precise geolocation data.
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