Cisco Implementing Cisco Unified Wireless Voice Networks (IUWVN) v2.0 : 642-742

  • Exam Code: 642-742
  • Exam Name: Implementing Cisco Unified Wireless Voice Networks (IUWVN) v2.0
  • Updated: Aug 19, 2026
  • Q & A: 190 Questions and Answers

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Cisco 642-742 Exam Syllabus Topics:

SectionWeightObjectives
Implement QoS for Voice and Video23%- DSCP and CoS marking
- TSM and performance monitoring
- WMM and 802.11e QoS
- CAC and admission control
Implement VoWLAN Features and Security25%- Authentication and encryption for voice
- WLAN configuration for voice clients
- Cisco 792x IP phone deployment
- Power save and U-APSD
Troubleshoot VoWLAN and High-Bandwidth Applications10%- Common voice issues and diagnostics
- RF and coverage problems
- Roaming and QoS troubleshooting
Describe and Design Voice over Wireless Architecture27%- VoWLAN fundamentals and requirements
- Roaming and mobility protocols
- RF design considerations for voice
- 802.11 standards and voice enhancements
Implement Multicast over Wireless15%- 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:

1. Which two pieces of information from the Cisco WLC v7.0 GUI does Monitor > Clients provide about a VoWLAN client? (Choose two.)

A) current RF channel
B) current MOS
C) current data rate
D) RSSI at current AP
E) WMM state


2. Which WCS tool will be especially helpful to ensure that all VoWLAN configurations are consistent across all controllers?

A) Monitor Client Detail
B) Traffic Stream Metrics
C) Voice Diagnostic
D) Voice Audit Report
E) Inspect VoWLAN Readiness


3. Which two applications benefit from upgrading to 802.11n? (Choose two.)

A) database access
B) video
C) SMS
D) email
E) voice
F) digital imaging


4. What address do PIM routers listen to in order to automatically discover the best RP for each multicast group?

A) 224.0.1.39
B) 224.0.1.40
C) 224.0.0.13
D) 224.0.0.14


5. A client with the MAC address 00:AB:11:CD:22:EF is experiencing poor voice quality on the VoWLAN. Which three commands would assist in isolating the issue? (Choose three.)

A) debug client 00:AB:11:CD:22:EF
B) show client detail 00:AB:11:CD:22:EF
C) debug call-control event enable
D) debug mobility pmk enable
E) debug capwap payload enable
F) debug cac event enable


Solutions:

Question # 1
Answer: D,E
Question # 2
Answer: D
Question # 3
Answer: B,F
Question # 4
Answer: B
Question # 5
Answer: A,B,F

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