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Instant Download Cisco : 642-742 Questions & Answers as PDF & Test Engine
- Exam Code: 642-742
- Exam Name: Implementing Cisco Unified Wireless Voice Networks (IUWVN) v2.0
- Updated: Sep 13, 2026
- No. of Questions: 190 Questions and Answers
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Cisco 642-742 Exam Syllabus Topics:
| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Implement VoWLAN Features and Security | 25% | - WLAN configuration for voice clients - Cisco 792x IP phone deployment - Power save and U-APSD - Authentication and encryption for voice |
| Topic 2: 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 3: Troubleshoot VoWLAN and High-Bandwidth Applications | 10% | - Roaming and QoS troubleshooting - Common voice issues and diagnostics - RF and coverage problems |
| Topic 4: Implement Multicast over Wireless | 15% | - VideoStream and multicast optimization - Multicast for voice and video - Multicast modes and challenges |
| Topic 5: Describe and Design Voice over Wireless Architecture | 27% | - Roaming and mobility protocols - RF design considerations for voice - VoWLAN fundamentals and requirements - 802.11 standards and voice enhancements |
Cisco Implementing Cisco Unified Wireless Voice Networks (IUWVN) v2.0 Sample Questions:
Which two statements correctly describe WLAN QoS configuration related to WMM? (Choose two.)
- A. 7920 AP CAC mode is not compatible with WMM policy and cannot be used at the same time.
- B. 7920 AP CAC and 7920 client CAC modes are for 802.11b/g/n only.
- C. 7920 AP CAC and 7920 client CAC modes are for 802.11a/n only.
- D. 7920 AP CAC and 7920 client CAC modes are for 802.11a/b/g/n.
- E. 7920 Client CAC mode is not compatible with WMM policy and cannot be used at the same time.
Correct Answer: B,E 🗳️
What are two benefits that result from Cisco WLC configuration of DCA for 5-GHz VoWLAN deployments? (Choose two.)
- A. Avoid nearby radar
- B. Avoid 802.11n 40-MHz channels
- C. Adjust RRM power thresholds
- D. Avoid channels that are affected by a microwave oven
- E. Manually remove channels that are not supported by VoWLAN clients
Correct Answer: A,E 🗳️
When implementing video teleconferencing over a wireless network, which three attributes should be considered when cell planning? (Choose three.)
- A. jitter
- B. client association
- C. packet loss
- D. throughput
- E. latency
- F. number of users on the network
Correct Answer: A,C,E 🗳️
A Cisco WLC v7.0 is configured with the default setting for wired and wireless QoS. When a wireless client sends a voice packet to the AP, how does the AP mark the outer CAPWAP header when the packet is sent to the Cisco WLC v7.0?
- A. The AP does not match the value to the CAPWAP header, which results in best effort.
- B. The AP uses the wireless priority value to create a matching DSCP value in the CAPWAP header.
- C. The AP uses the wireless priority value to create a matching 802.1p value in the CAPWAP header.
- D. The AP uses the wireless priority value to create both a matching 802.1p and DSCP value in the CAPWAP header.
Correct Answer: A 🗳️
Which statement best describes the ideal VoWLAN design?
- A. larger cells with higher data rates enabled and WPA2 to secure voice conversations
- B. smaller cells with higher data rates enabled and no overlap to prevent co-channel interference
- C. smaller cells with all data rates enabled to ensure that all clients can associate
- D. smaller cells with higher data rates enabled and admission control enabled through WMM
Correct Answer: D 🗳️
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