- Exam Code: 642-742
- Exam Name: Implementing Cisco Unified Wireless Voice Networks (IUWVN) v2.0
- Certification Provider: Cisco
- Corresponding Certification:CCNP Wireless
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Cisco 642-742 Exam Syllabus Topics:
| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Implement Multicast over Wireless | 15% | - Multicast modes and challenges - VideoStream and multicast optimization - Multicast for voice and video |
| Topic 2: Troubleshoot VoWLAN and High-Bandwidth Applications | 10% | - Roaming and QoS troubleshooting - RF and coverage problems - Common voice issues and diagnostics |
| Topic 3: Implement QoS for Voice and Video | 23% | - WMM and 802.11e QoS - DSCP and CoS marking - CAC and admission control - TSM and performance monitoring |
| Topic 4: Describe and Design Voice over Wireless Architecture | 27% | - RF design considerations for voice - VoWLAN fundamentals and requirements - Roaming and mobility protocols - 802.11 standards and voice enhancements |
| Topic 5: Implement VoWLAN Features and Security | 25% | - WLAN configuration for voice clients - Authentication and encryption for voice - Cisco 792x IP phone deployment - Power save and U-APSD |
Cisco Implementing Cisco Unified Wireless Voice Networks (IUWVN) v2.0 Sample Questions:
Which two attributes can be enabled for checking by the Voice Audit Tool in Cisco WCS v7.0? (Choose two.)
- A. -67 dBm cell edge
- B. MOS
- C. 25 dB SNR
- D. DHCP
- E. TSM
Correct Answer: D,E 🗳️
A customer recently placed 10 WLCs in a mobility group and now sees a large amount of additional traffic to and from the controller. What setting should be changed to reduce the traffic?
- A. Mobility Anchor Keep Alive Interval
- B. Mobility Anchor Keep Alive Count
- C. Mobility Unicast Messaging
- D. Mobility Multicast Messaging
Correct Answer: D 🗳️
Wireless IP phone users are complaining that during the day there are certain points in the facility where voice quality is poor. How should you troubleshoot this issue?
- A. Locate the APs in question and use the Cisco WLC to enable TSM to capture WLAN voice traffic statistics.
- B. Ask the users to capture voice quality statistics from their wireless IP phones the next time they have issues.
- C. Go into the Cisco WLC and monitor client details for WMM issues.
- D. Perform a detailed analysis of the voice call quality from end to end.
Correct Answer: A 🗳️
A customer reports that wireless clients are not able to receive multicast data from known working multicast servers on the wired network. The client is connecting at the highest mandatory wireless rate of 24 Mbps and the wireless controller is configured for multicastunicast mode. What three actions should the engineer take next to troubleshoot the issue? (Choose three.)
- A. verify Multicast Listener Discovery (MLD) v1 snooping has been enabled to keep track of and deliver IPv4 multicast flows
- B. verify that Global Multicast mode has been enabled
- C. verify that IGMP snooping is disabled on the wireless controller since the access points are handling IGMP messages from the clients
- D. make sure the highest mandatory rate is set to 54 Mbps so that the multicast traffic has sufficient bandwidth
- E. change the wireless controller from Multicast-Unicast mode to Multicast-Multicast mode and assign a multicast address in the 239.X.X.X/8 subnet
- F. verify that the L3 interfaces are configured for pim sparse-dense-mode on the VLAN servicing the wireless access points as well as the wireless controller's management VLAN
Correct Answer: B,E,F 🗳️
Using proper VoWLAN design practice, what would be a reasonable total number of calls for a properly designed 802.11g cell to ensure call quality?
- A. 20
- B. 4
- C. 27
- D. 25
- E. 7
- F. 14
Correct Answer: F 🗳️
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