Wifi on Android SDK

I have installed the Android SDK and I noticed that the WiFi button is not enabled in the emulat开发者_开发技巧or. I want to know, whether this functionality available on Emulator or not, and why. I have been looking for a convincing answer for a long period.

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There is no WiFi chip inside emulator, so the button cannot be pressed.

Emulator already has a network connection routed through your host PC, so WiFi is not really needed.