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Cisco 642-742 Exam Syllabus Topics:
| Section | Objectives |
|---|---|
| Topic 1: Call Admission Control (CAC) | - Bandwidth management for voice sessions - CAC mechanisms in WLAN environments |
| Topic 2: Voice Deployment and Troubleshooting | - VoWLAN deployment best practices - Common voice quality issues and diagnostics |
| Topic 3: Roaming and Mobility | - Fast secure roaming (CCKM, 802.11r concepts) - Layer 2 and Layer 3 roaming behavior |
| Topic 4: QoS for Wireless Voice | - End-to-end QoS design - WMM (Wi-Fi Multimedia) and prioritization |
| Topic 5: Cisco Unified Wireless Architecture | - Access point and controller interaction - Controller-based WLAN design |
| Topic 6: Wireless Voice Fundamentals | - 802.11 standards and voice considerations - Voice over WLAN concepts |
Cisco Implementing Cisco Unified Wireless Voice Networks (IUWVN) v2.0 Sample Questions:
Users are experiencing poor voice quality on a new VoWLAN. Which feature can be used to isolate the issue?
- A. U-APSD
- B. TSM
- C. EDCA
- D. CAC
- E. TSPEC
Refer to the exhibit.
A customer with a high-density deployment has called stating there have been voice quality issues with roaming clients. Given the configuration, what is the problem?
- A. Static IP tunneling should be enabled so that the voice clients can be tunneled properly.
- B. Band-Select has not been enabled and is allowing the voice client to switch bands when roaming.
- C. Load-Balancing is enabled and sending reason code 17 to roaming voice clients.
- D. DTIM should be configured to 2 on both 2.4 and 5ghz to aid in delivery of wireless frames during roaming.
A Cisco 7925 phone at a client's location is not registering with CUCM. The engineer analyzes a packet capture, sees that the phone receives an IP, and downloads the proper configuration file from TFTP successfully. What type of messages should the phone be sending at this point?
- A. SCCP
- B. MCGP
- C. H.245
- D. H.323
Using proper VoWLAN design practice, what would be the Cisco recommended total number of calls for a properly designed 802.11a cell to ensure call quality?
- A. 14
- B. 4
- C. 20
- D. 7
- E. 27
- F. 25
When inspecting the WCS voice readiness tool, an engineer notices yellow areas. What step should you take to fix this?
- A. increase the power of APs in the yellow area to increase RSSI
- B. remove some APs in the area to reduce co-channel interference
- C. change the channel on some APs in the area to reduce co-channel interference
- D. add additional APs to the coverage area to increase RSSI
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