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 |
|---|---|---|
| Troubleshoot VoWLAN and High-Bandwidth Applications | 10% | - RF and coverage problems - Roaming and QoS troubleshooting - Common voice issues and diagnostics |
| Implement QoS for Voice and Video | 23% | - CAC and admission control - TSM and performance monitoring - DSCP and CoS marking - WMM and 802.11e QoS |
| 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 |
| Implement VoWLAN Features and Security | 25% | - Power save and U-APSD - Cisco 792x IP phone deployment - Authentication and encryption for voice - WLAN configuration for voice clients |
| Implement Multicast over Wireless | 15% | - VideoStream and multicast optimization - Multicast modes and challenges - Multicast for voice and video |
Cisco Implementing Cisco Unified Wireless Voice Networks (IUWVN) v2.0 Sample Questions:
Refer to the exhibit.
A customer with a high-density deployment has called stating there have been voice quality issues with roaming clients. Given the configuration, what is the problem?
- A. Band-Select has not been enabled and is allowing the voice client to switch bands when roaming.
- B. DTIM should be configured to 2 on both 2.4 and 5ghz to aid in delivery of wireless frames during roaming.
- C. Static IP tunneling should be enabled so that the voice clients can be tunneled properly.
- D. Load-Balancing is enabled and sending reason code 17 to roaming voice clients.
Correct Answer: D 🗳️
What are two benefits that result from Cisco WLC configuration of DCA for 5-GHz VoWLAN deployments? (Choose two.)
- A. Avoid 802.11n 40-MHz channels
- B. Avoid channels that are affected by a microwave oven
- C. Manually remove channels that are not supported by VoWLAN clients
- D. Avoid nearby radar
- E. Adjust RRM power thresholds
Correct Answer: C,D 🗳️
Which one of these options best describes the ideal WLAN design for wireless VoIP clients?
- A. smaller cells with APs in the inner areas using omnidirectional antennas, and APs on the outer walls using directional antennas facing inward
- B. larger cells with higher speeds and WPA2 security enabled to ensure the best possible coverage
- C. smaller cells with higher speeds and CAC-enabled prioritization of WMM clients
- D. smaller cells with all configurable speeds to ensure that all clients (802.11a/b/g) can associate to the wireless infrastructure
Correct Answer: C 🗳️
An engineer is studying the TSM for a VoWLAN user experiencing issues using a CCXv3 device. What two items will be shown? (Choose two.)
- A. uplink MOS score
- B. downlink packet loss
- C. downlink MOS score
- D. uplink packet loss
- E. downlink packet latency
- F. uplink packet latency
Correct Answer: B,E 🗳️
When inspecting the WCS voice readiness tool, an engineer notices yellow areas. What step should you take to fix this?
- A. change the channel on some APs in the area to reduce co-channel interference
- B. add additional APs to the coverage area to increase RSSI
- C. remove some APs in the area to reduce co-channel interference
- D. increase the power of APs in the yellow area to increase RSSI
Correct Answer: B 🗳️
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