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Cisco 642-742 Exam Syllabus Topics:
| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Troubleshoot VoWLAN and High-Bandwidth Applications | 10% | - RF and coverage problems - Common voice issues and diagnostics - Roaming and QoS troubleshooting |
| Topic 2: Implement QoS for Voice and Video | 23% | - WMM and 802.11e QoS - CAC and admission control - DSCP and CoS marking - TSM and performance monitoring |
| Topic 3: Describe and Design Voice over Wireless Architecture | 27% | - Roaming and mobility protocols - RF design considerations for voice - 802.11 standards and voice enhancements - VoWLAN fundamentals and requirements |
| Topic 4: Implement VoWLAN Features and Security | 25% | - WLAN configuration for voice clients - Authentication and encryption for voice - Cisco 792x IP phone deployment - Power save and U-APSD |
| Topic 5: 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:
When setting up a VoWLAN deployment with Nokia E-Series dual-mode phones and Cisco 7925G phones, the engineer notices the Nokia phones work over cellular but fail over WiFi, whereas the Cisco phones work fine. What setting would cause this behavior?
- A. WPA Enterprise used
- B. WPA2 Enterprise used
- C. SSID set to non-broadcast
- D. CCKM enabled
- E. CCKM disabled
- F. SSID set to broadcast
Correct Answer: C 🗳️
A company is deploying multicast over wireless that needs to be in a multicast-multicast mode. The access points are not receiving multicast traffic from the wireless controller. What command would display the needed information to determine if the AP has joined the multicast group?
- A. show pim multicast
- B. show ip igmp groups
- C. show igmp routes
- D. show ip multicast routing
- E. show ip route
- F. show ip mroute
Correct Answer: B 🗳️
A network engineer is troubleshooting a VoWLAN deployment with VoFi Analyzer and sees a WiMOS score of 2.9. How would the tool describe this value?
- A. Many dissatisfied
- B. Some dissatisfied
- C. All satisfied
- D. Unacceptable
Correct Answer: A 🗳️
A single Layer 2 multicast address can map to how many IPv4 multicast addresses?
- A. 32
- B. 1
- C. 64
- D. 28
- E. 16
- F. 8
Correct Answer: A 🗳️
When a VoWLAN client is in the range of two cells, which two statements describe how the client makes a decision about which cell is the best to associate with? (Choose two.)
- A. The client will associate with the cell broadcasting the highest TSPEC value.
- B. The client will associate with the cell with the lowest SNR value.
- C. The client will associate with the cell broadcasting the lowest mandatory date rate.
- D. The client will associate with the cell broadcasting the highest data rate.
- E. The client will associate with the cell with the highest RSSI value.
- F. The client will associate with the cell broadcasting the highest 802.11e value.
- G. The client will associate with the first cell that advertises U-APSD.
Correct Answer: B,E 🗳️
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