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Wifi and Bluetooth.
Should you buy an Ipad as well as an Iphone? Answer: This is completely up to you, the Ipad is a wireless device so it doesn't make sense to spend money on two phones.
Wireless routers have antenni and your iphone, ipad, computer, etc do too. Resulting in wifi signals between the two.
Wireless mice can use RF (Radio Frequency) or IR (Infra Red) technologies. IR requires line of sight to the mouse receiver, similar to a television remote control. RF is usually the preferred method, since it does not require line of sight. Hope that helps :)
Scalable Link Interface (SLI) - by Nvidia Crossfire - By ATI
10BASE-T and all the generations of Ethernet Technologies released after 10BASE-T support full duplex. Full duplex mode allows two nodes on a network to communicate with each other simultaneously.
Two manufacturers of wireless fences for pets are the PetSafe Wireless Fence and the Perimeter Technologies Wire Free Wireless Fence. The second one which is costlier allows you to spot where your pet is located within the containment area.
Every iPad comes with complimentary telephone technical support for 90 days from your iPad purchase and a one-year limited warranty. With the AppleCare Protection Plan, you can extend your service coverage to two years from the iPad purchase date. You can call Apples award-winning technical support experts as often as you like and get your questions answered. And if you need repair service, we offer convenient service options.
-Programmed services and protocols that move the messages across the network -Technologies that support network communications
The computer itself must have a wireless adapter to connect to wireless networks. It is also necessary to have a wireless router, which must support the same kind of wireless communication as the adapter(a,b,g,n), although an ad-hoc network can be set up with only two computers and no router.
The iPad two if (at the time of writing) the latest generation of iPads, where as the iPad 3G is a iPad one or two that has the ability to use mobile networks to access the internet.
The iPad2 is the only iPad with a camera, in fact it has Two.