CWS CWS WLAN Roaming and QoS Questions and Answers 1 — Questions and Answers
Question 1: Which 802.11 amendment introduced fast BSS transition (FT) to reduce roaming latency?
- 802.11r (Correct answer)
- 802.11k
- 802.11v
- 802.11u
Correct answer: 802.11r
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?
- Radio Resource Management for neighbor reports (Correct answer)
- Fast roaming key caching
- WPA3 key exchange
- Channel bonding coordination
Correct answer: Radio Resource Management for neighbor reports
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?
- AC_VO (Correct answer)
- AC_VI
- AC_BE
- AC_BK
Correct answer: AC_VO
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?
- A client that refuses to roam away from a weak AP signal (Correct answer)
- A client permanently bonded to a specific SSID
- A client using 802.11r fast transition
- A client with a static IP address
Correct answer: A client that refuses to roam away from a weak AP signal
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?
- CWmin (Correct answer)
- AIFS
- TXOP
- CWmax
Correct answer: CWmin
CWmin defines the minimum contention window, which determines how aggressively a traffic class competes for channel access.
Question 6: What is the function of 802.11v BSS Transition Management?
- Allows APs to suggest roaming targets to clients (Correct answer)
- Encrypts roaming handshakes
- Assigns static channels to APs
- Manages WPA2 key rotation
Correct answer: Allows APs to suggest roaming targets to clients
802.11v BSS Transition Management allows the network to suggest better APs to clients, enabling network-assisted roaming.
CWS CWS WLAN Roaming and QoS Questions and Answers 1
Which 802.11 amendment introduced fast BSS transition (FT) to reduce roaming latency?