- Exam Code: 642-742
- Exam Name: Implementing Cisco Unified Wireless Voice Networks (IUWVN) v2.0
- Updated: Sep 13, 2026
- Q & A: 190 Questions and Answers
Cisco Implementing Cisco Unified Wireless Voice Networks (IUWVN) v2.0 : 642-742 exam
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Cisco 642-742 Exam Syllabus Topics:
| Section | Objectives |
|---|---|
| Topic 1: VoWLAN Implementation and Troubleshooting | - Configure WLAN for voice - Troubleshoot VoWLAN issues |
| Topic 2: Multicast over Wireless | - Configure and troubleshoot multicast over wireless - Multicast concepts and implications for wireless |
| Topic 3: Voice over Wireless LAN (VoWLAN) Fundamentals | - Wireless design considerations for voice - VoWLAN architecture and call flow |
| Topic 4: Preparing for High-Bandwidth Wireless Applications | - Support for video and latency-sensitive applications - Bandwidth planning for wireless networks |
| Topic 5: Quality of Service (QoS) for Wireless Voice | - WLC and controller QoS configuration - Implementing QoS on wireless and wired infrastructure |
Cisco Implementing Cisco Unified Wireless Voice Networks (IUWVN) v2.0 Sample Questions:
Question #1
A single Layer 2 multicast address can map to how many IPv4 multicast addresses?
- A. 8
- B. 32
- C. 16
- D. 28
- E. 1
- F. 64
Correct Answer: B 🗳️
Question #2
The customer has deployed C7260 phones with clients connected to them. What switch feature could be enabled to distinguish IP voice traffic from client data traffic?
- A. WME
- B. Voice VLAN
- C. QBSS
- D. Weighted Queuing
- E. QoS routing
Correct Answer: B 🗳️
Question #3
Refer to the exhibit.
Which two statements describe the WLC configuration? (Choose two.)
- A. AP will effectively allow 81% of bandwidth for local new calls.
- B. AP will effectively allow 69% of bandwidth for local new calls.
- C. Priority new calls can be expedited.
- D. AP will effectively allow 75% of bandwidth for local new calls.
- E. Priority roaming calls can be expedited.
Correct Answer: B,C 🗳️
Question #4
A wireless customer has called with a problem regarding voice calls. When a person is put on hold, there is silence and the music on hold does not come across. What is a requirement of music on hold?
- A. There needs to be multicast routing configured network wide from the access point to the wireless controller.
- B. Multicast routing should be configured at least to the wireless controller and client dynamic interfaces.
- C. The music on hold's multicast address needs to be configured for multicast direct.
- D. The wireless voice network needs to be configured for a QoS of platinum to permit the multicast traffic.
Correct Answer: B 🗳️
Question #5
WLC v7.0 is properly configured for 802.11n and multicast video without the optional VideoStream. Which three of these options describe frames sent from the AP to wireless clients? (Choose three.)
- A. ACK per frame
- B. No ACKs
- C. sent at highest mandatory rate
- D. sent as best effort QoS
- E. sent as gold QoS
- F. sent at lowest mandatory rate
- G. sent at client MCS data rate
Correct Answer: B,C,D 🗳️
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