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Question 10 - CWNA-109 discussion

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You are implementing a multi-AP WLAN and fast secure roaming is essential. Which one of the following methods is an IEEE 802.11 standard method for fast roaming?

A.
FT
Answers
A.
FT
B.
OKC
Answers
B.
OKC
C.
Load balancing
Answers
C.
Load balancing
D.
Band steering
Answers
D.
Band steering
Suggested answer: A

Explanation:

FT (Fast Transition) is an IEEE 802.11 standard method for fast roaming. FT is defined in the IEEE 802.11r amendment and is also known as Fast BSS Transition (FBT) or Fast Secure Roaming. FT is a feature that allows a client station to quickly switch from one AP to another within the same ESS (Extended Service Set) without having to re-authenticate and re-associate with each AP. This reduces the latency and packet loss that may occur during roaming, thus improving the user experience and maintaining the security of the connection. FT works by using pre-authentication and key caching mechanisms that allow the client station and the APs to exchange security information before the actual roaming occurs.This way, when the client station decides to roam to a new AP, it can use a fast reassociation request and response that contain only a few fields, instead of a full authentication and association exchange that require more time and data.Reference:1, Chapter 9, page 367;2, Section 6.3

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asked 16/09/2024
Joao Domingues
32 questions
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