CWS CWS WLAN Roaming and QoS Questions and Answers

Question 1

Which 802.11 amendment introduced fast BSS transition (FT) to reduce roaming latency?

Accepted Answer

802.11r

Answer

802.11r introduced Fast BSS Transition (FT), allowing clients to pre-authenticate to neighboring APs before roaming.

Question 2

What is the purpose of 802.11k in a wireless network?

Accepted Answer

Radio Resource Management for neighbor reports

Answer

802.11k enables Radio Resource Management, allowing APs to provide neighbor reports so clients can make better roaming decisions.

Question 3

Which WMM Access Category (AC) is assigned the highest priority for voice traffic?

Accepted Answer

AC_VO

Answer

AC_VO (Access Category Voice) is assigned the highest priority in WMM to ensure low latency for voice traffic.

Question 4

What does the term 'sticky client' refer to in a WLAN environment?

Accepted Answer

A client that refuses to roam away from a weak AP signal

Answer

A sticky client holds onto its association with a distant or overloaded AP instead of roaming to a closer, stronger AP.

Question 5

Which EDCA parameter controls the minimum contention window size for a WMM Access Category?

Accepted Answer

CWmin

Answer

CWmin defines the minimum contention window, which determines how aggressively a traffic class competes for channel access.

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