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Cisco 642-742 Exam Syllabus Topics:
| Section | Weight | Objectives |
|---|---|---|
| Describe and Design Voice over Wireless Architecture | 27% | - VoWLAN fundamentals and requirements - Roaming and mobility protocols - RF design considerations for voice - 802.11 standards and voice enhancements |
| Implement Multicast over Wireless | 15% | - Multicast for voice and video - Multicast modes and challenges - VideoStream and multicast optimization |
| Implement QoS for Voice and Video | 23% | - TSM and performance monitoring - DSCP and CoS marking - CAC and admission control - WMM and 802.11e QoS |
| Implement VoWLAN Features and Security | 25% | - Power save and U-APSD - Authentication and encryption for voice - Cisco 792x IP phone deployment - WLAN configuration for voice clients |
| Troubleshoot VoWLAN and High-Bandwidth Applications | 10% | - RF and coverage problems - Roaming and QoS troubleshooting - Common voice issues and diagnostics |
Cisco Implementing Cisco Unified Wireless Voice Networks (IUWVN) v2.0 Sample Questions:
Wireless phones at a customer's site often experience a fast busy signal when trying to initiate calls. What two actions address this issue? (Choose two.)
- A. decrease cell size
- B. increase cell size
- C. decrease CAC Max Bandwidth
- D. increase CAC Reserved Bandwidth
- E. increase CAC Max Bandwidth
An engineer is configuring a new VoWLAN and wants only IEEE 802.11g/n to be supported. Which two data rates should be configured? (Choose two.)
- A. 1, 2, 5.5, and 11 Mbps should be disabled.
- B. Lower than 11 Mbps should be disabled.
- C. 18 Mbps and higher should be supported.
- D. Lower than 24 Mbps should be supported.
- E. 11 Mbps should be mandatory.
- F. 12 Mbps should be mandatory.
- G. 6 and 9 Mbps should be supported.
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 both a matching 802.1p and 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 a matching DSCP value in the CAPWAP header.
Your Cisco Unified Wireless IP Phones 7921G and 7925G are associated with the VoWLAN at your branch office. When they attempt to place a call, the call fails to go through and you receive a fast busy tone. What is the issue?
- A. Automatic alternate routing has been invoked.
- B. The wireless phones failed to register with the Cisco Unified Communications Manager cluster.
- C. The Cisco Unified Communications Manager cluster invoked CAC to preserve IP WAN voice bandwidth.
- D. The local gateway rejected the call because of high IP WAN utilization.
After enabling global multicast, multicast traffic has been flooding the wired and wireless network. The wireless engineer has been troubleshooting and is attempting to find the source of the traffic. What command will display the multicast traffic source as well as the incoming interface?
- A. show ip device tracking all
- B. show ip igmp groups
- C. show ip mroute
- D. show ip pim neighbor
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