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| Section | Objectives |
|---|---|
| Topic 1: Wireless Voice Fundamentals | - Voice over WLAN concepts - 802.11 standards and voice considerations |
| Topic 2: Call Admission Control (CAC) | - Bandwidth management for voice sessions - CAC mechanisms in WLAN environments |
| Topic 3: Cisco Unified Wireless Architecture | - Controller-based WLAN design - Access point and controller interaction |
| Topic 4: Voice Deployment and Troubleshooting | - Common voice quality issues and diagnostics - VoWLAN deployment best practices |
| Topic 5: QoS for Wireless Voice | - WMM (Wi-Fi Multimedia) and prioritization - End-to-end QoS design |
| Topic 6: Roaming and Mobility | - Layer 2 and Layer 3 roaming behavior - Fast secure roaming (CCKM, 802.11r concepts) |
1. A VoWLAN site survey was performed and equipment installed based on recommended design guidelines. Which two statements describe reasons to perform a post-deployment survey? (Choose two.)
A) There are elevator shafts.
B) There are roaming pathways.
C) There are changes in temperature in the indoor environment.
D) There is insufficient information about the number of people in the area when the survey is performed.
E) There is insufficient information by AirMagnet VoFi Analyzer.
2. An engineer finishes configuring a voice over wireless deployment. However, during the
testing phase, the 7925 series phones are not able to complete calls and display Network Busy. CAC has been configured for the wireless system. What action should the engineer take next to troubleshoot the issue?
A) ensure the lowest data rate is 12Mbps and set to Mandatory, and verify there is enough allocated bandwidth to support voice calls
B) check that the lowest data rate is 5.5Mbps to support TSPEC, and verify that the SSID is set to Platinum
C) modify the SIP CAC Access Control List on the controller to permit voice traffic for 7925 phones
D) turn off traffic stream metrics
3. Which two configurations can resolve one-way audio in WLANs? (Choose two.)
A) Platinum QoS in the WLAN
B) admission control
C) DTPC
D) maximum transmit power
E) TPC on AP
4. Using proper VoWLAN design practice, what would be a reasonable total number of calls for a properly designed 802.11a cell to ensure call quality?
A) 14
B) 4
C) 20
D) 25
E) 7
F) 27
5. 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) increase cell size
B) increase CAC Max Bandwidth
C) decrease cell size
D) increase CAC Reserved Bandwidth
E) decrease CAC Max Bandwidth
Solutions:
| Question # 1 Answer: B,D | Question # 2 Answer: A | Question # 3 Answer: C,E | Question # 4 Answer: C | Question # 5 Answer: B,C |
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