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Exam Code: 642-742
Exam Name: Implementing Cisco Unified Wireless Voice Networks (IUWVN) v2.0
Updated: Sep 27, 2026
Q & A: 190 Questions and Answers
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| Section | Weight | Objectives |
|---|---|---|
| Implement Multicast over Wireless | 15% | - Multicast for voice and video - VideoStream and multicast optimization - Multicast modes and challenges |
| Implement QoS for Voice and Video | 23% | - CAC and admission control - WMM and 802.11e QoS - DSCP and CoS marking - TSM and performance monitoring |
| Troubleshoot VoWLAN and High-Bandwidth Applications | 10% | - RF and coverage problems - Roaming and QoS troubleshooting - Common voice issues and diagnostics |
| Implement VoWLAN Features and Security | 25% | - Cisco 792x IP phone deployment - WLAN configuration for voice clients - Authentication and encryption for voice - Power save and U-APSD |
| Describe and Design Voice over Wireless Architecture | 27% | - 802.11 standards and voice enhancements - Roaming and mobility protocols - VoWLAN fundamentals and requirements - RF design considerations for voice |
Which two statements correctly describe WLAN QoS configuration related to WMM? (Choose two.)
Correct Answer: C,E 🗳️
You have recently enabled multicast on your WLAN. When users join the multicast sessions, you see the traffic utilization on all the APs that are controlled by the Cisco WLC v7.0 increase, which includes those APs where there are no multicast clients.
Which configuration parameter needs to be verified to prevent APs with no subscribed multicast clients from receiving traffic?
Correct Answer: E 🗳️
A packet arrives with a decimal value of 12. Which AF class does the packet belong to, and what is the drop probability of the packet? (Choose two.)
Correct Answer: D,E 🗳️
A network engineer is viewing the QBSS information in a packet sniff. Which two QBSS characteristics are crucial for successful troubleshooting? (Choose two.)
Correct Answer: C,D 🗳️
Wireless phones at a customer's site often experience a fast busy signal when trying to initiate calls. What two actions address this issue? (Choose two.)
Correct Answer: A,E 🗳️
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