What is the size of the initialization vector n wpa, Computer Network Security

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Question :

Wi-Fi protected access (WPA) was specified by the Wi-Fi alliance with the primary aim of enhancing the security of existing 802.11 networks. However, WPA was only a stepping stone to the final solution, the WPA2.

(a) Explain why WPA was only a stepping stone and not the final solution?

(b) By using an appropriate diagram, describe how the 802.1x authentication model is mapped to Wi-Fi.

(d) What is the size of the Initialization Vector n WPA? How is this size different from the IV size in WEP?

(e) List the four session keys that form the Pair-wise Transient Key in WPA.

(f) List the four types of packets used by RADIUS for authentication.

(g) Explain any differences in the encryption and integrity techniques adopted by WPA and WPA2.

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