How does WiFi relate to TCP/IP?

Am I correct when I say that WiFi networks use TCP/IP as the communication protocol? Are Wireless networks simply replacing the physical medium that transfers the data? Or is WiFi a completly different protocol.

Also, how does Bluetooth compare to WiFi? Is it just the BT is for smaller range communication?

Thank you.

5 Answers

  • 1 decade ago
    Favourite answer

    WiFi is one way to implment OSI Layers 1 and 2 (see It does that using radio technology. Ethernet is another way to implment Layers 1 and 2 (using wires or fibre). Once you have a Layer 1 and 2 infrastructure, you then have a local network (LAN) that can interconnect a small number of hosts (usually a few to a few hundred) that are typically managed by a single entity. You can then run any Level 3 internetworking protocol, such as IP, IPX, AppleTalk, etc. over the LAN, which allows those hosts to talk not only to each other but also to hosts anywhere else on the internet (provided you have an appropriate router with a physical connection to an ISP). If your Level 3 protocol is IP, then you can run any of several Level 4 protocols on top of that, such as TCP or UDP. The Level 4 protocols transfer data between specified "ports" (basically, just numerical addresses) on the hosts at the two ends, and they can do it very reliably, though with high overhead (TCP), not reliably, but with low overhead (UDP), or in various other ways. ## Bluetooth networks are kind of like LANs, but are not normally thought of in this model, because they are only used for point-to-point communication between devices close together (10 m). Bluetooth is really just a wireless replacement for a serial cable.

  • 1 decade ago

    The easist way to look at it is WiFi is a replacement for a CAT5 cable. Anything you can do with CAT5 you can do with WiFi. Although better speeds and communication comes from being hard wired, WiFi is a good replacement when you need to be mobile or you can't wire the room.

    BlueTooth was designed as a short range communications protocol mostly for exchanging data with two or more devices in the same room. Better speed and battery life with BlueTooth when the device is only connected to one device at a time.

  • 1 decade ago

    A WiFi network can use just about any protocol that a wired network can use. TCP/IP just happens to be the most popular. However, it could easily also use Appletalk, IPX, etc. Think of WiFi just as you would a wired network.

    Bluetooth is similar, but has its own frequency/protocol and a much much shorter range.

  • 4 years ago

    Routers use an Ethernet cable to hook up with a working laptop or pc, and greater often than no longer routers have upto 4 Ethernet ports to hook up with 4 under pressure computers. Ethernet is plenty quicker at data transmission than wifi .. that's clearly why on the spot enabled computers do no longer choose cables. Cat5e is the main hassle-free Ethernet style, i think of, yet there is likewise Cat6 cable which no longer a great number of gadgets can presently use to this is finished potentinal.

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  • 1 decade ago

    Well yes and no. wifi is the archtecture of sending a signal over 2.4 ot 5.2 ghz. Now You could relistly send what ever you wanted over Wifi. But the routers out there Is TCP/IP as the medium for transport. TCPIP is the protocol.

    Basicly Wifi is Hardware based and TCPIP is software based.

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