Hi every body!

I was studying about wireless standards. i have few questions;

Here iswhat my book says about wpa:

"The IEEE was working on the IEEE wlan security standard.802.11i, but the wlan industry needed a quicker solution than waiting on the IEEE standard. So the wi-fi alliance took the current work-in progress on the 802.11i commitee,made some assumptions and predictions and defined a defacto industry standard WPA.

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Does WPA include a subset of 802.11i features ? or does wpa include subset of 802.11i- features+ features resulted because of assumption and predictions wi -fi alliance made while 802.11i was still in draft ? if yes then,

What are those features resulted because of those assumption and predictions?

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Does wpa 2 means 802.11i? or put it another way, does wpa 2 includes all the features specified in 802.11 i ?

thanks a lot and have a nice weekend !