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When deploying an Enterprise-class VoWLAN infrastructure, which Access Category (AC) must be used to prioritize voice packets and ensure optimal performance?
A. AC_VO
B. AC_VI
C. AC_BK
D. AC_BE
正解:A
解説:
In Wi-Fi networks, the IEEE 802.11e amendment introduces Quality of Service (QoS) features, allowing traffic to be categorized into different Access Categories (ACs) to prioritize data transmission. For Voice over WLAN (VoWLAN) applications, it is crucial to prioritize voice traffic to ensure low latency and jitter. The AC_VO (Voice Access Category) is designated for this purpose, providing the highest priority over other traffic types.
Implementing AC_VO ensures that voice packets are transmitted with minimal delay, which is essential for maintaining call quality in enterprise environments.
Reference: CWDP-305 Official Study and Reference Guide, Chapter on Designing for Specific Applications
質問 # 335
You have enabled IEEE 80211 FT in your WLAN infrastructure. You want to verify roaming between APs (two at a time) and determine If all of your end-points are capable of performing fast roaming What tool would you use to achieve this goal?
A. Protocol Analyzer and two Wi-Fi adapters (one for each channel of the chosen bands)
B. RF Spectrum Analyzer and two spectrum adapters (one for each band)
C. Predictive design tool and two Wi-Fi adapters (one for each band)
D. WLAN scannerdiscovery tool and two WI-FI adapters (one for each channel of the chosen bands
正解:A
質問 # 336
You are designing a WLAN and nave been asked to recommend a security solution for the network The organization requires that 802 1X/EAP be implemented, but they do not have a PKI and do not wish to deploy one They suggest that mostly Windows clients. Apple phones and Android phones will be used What do you recommend?
A. Use CCMP AES with a PSK
B. Use FAP-TLS for the authentication solution
C. Use EAP-PEAP for the authentication solution
D. Use TKIPRC4 with a PSK
正解:C
質問 # 337
What two 802.11 amendments deal with regulatory and transmission requirements?
Response:
A. 802.11i
B. 802.11d
C. 802.11k
D. 802.11h
E. 802.11f
正解:B、E
質問 # 338
Main Topicost-Design ValidationandTroubleshooting
Question:
During a post-validation assessment, you have configured a client for 802.1X/EAP but it is not passing authentication. Which areas should you check in the WLAN configuration?
A. Whether the RADIUS shared secret is properly configured on the supplicant and authentication server
B. Whether the authenticator is configured to support the EAP type(s) your client is configured for
C. Whether the client has a fully valid certificate
D. Whether the RADIUS server is online and configured for the matching port on the APs and WLAN controllers
正解:B、C、D
解説:
Comprehensive and Detailed Explanation:
When troubleshooting 802.1X/EAP authentication issues, consider the following:
A:Ensure the RADIUS server is online and that the APs and WLAN controllers are configured to communicate with it on the correct port. Misconfigured ports can prevent authentication requests from reaching the server.
C:Verify that the authenticator (e.g., AP or controller) supports the EAP type configured on the client. A mismatch can lead to authentication failures.
D:If using certificate-based EAP methods (like EAP-TLS), confirm that the client's certificate is valid, not expired, and trusted by the RADIUS server. Certificate issues are common causes of authentication problems.
Note:
B:The RADIUS shared secret is configured between the authenticator and the RADIUS server, not on the client (supplicant). Therefore, this option is not applicable.
Reference:CWDP-305 Study Guide, Chapter on Post-Design ValidationandTroubleshooting - 802.1X/EAP Authentication Issues.