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Cisco 642-742 Exam Syllabus Topics:
| Section | Objectives |
|---|---|
| Topic 1: QoS for Wireless Voice | - WMM (Wi-Fi Multimedia) and prioritization - End-to-end QoS design |
| Topic 2: Wireless Voice Fundamentals | - Voice over WLAN concepts - 802.11 standards and voice considerations |
| Topic 3: Call Admission Control (CAC) | - Bandwidth management for voice sessions - CAC mechanisms in WLAN environments |
| Topic 4: Cisco Unified Wireless Architecture | - Access point and controller interaction - Controller-based WLAN design |
| Topic 5: Roaming and Mobility | - Fast secure roaming (CCKM, 802.11r concepts) - Layer 2 and Layer 3 roaming behavior |
| Topic 6: Voice Deployment and Troubleshooting | - Common voice quality issues and diagnostics - VoWLAN deployment best practices |
Cisco Implementing Cisco Unified Wireless Voice Networks (IUWVN) v2.0 Sample Questions:
1. Users are experiencing poor audio quality when calling from their 7925 series VoIP Phones. Call quality is exceptional from wired to wired phones, but not from wired to wireless phones. The wired network has QoS deployed properly and the SSID is configured with Platinum QoS. What should be verified to troubleshoot the issue?
A) The controller is marking the 802.1p tag of 3, the AP switchport has been configured to trust DSCP, and the controller's switchport to trust CoS.
B) The controller is marking the 802.1p tag of 4, the AP switchport has been configured to trust CoS, and the controller's switchport to trust DSCP.
C) The controller is marking the 802.1p tag of 5, the AP switchport has been configured to trust DSCP, and the controller's switchport to trust CoS.
D) The controller is marking the 802.1p tag of 6, the AP switchport has been configured to trust CoS, and the controller's switchport to trust DSCP.
2. Which three call information items does AirMagnet VoFi Analyzer provide? (Choose three.)
A) co-channel interference percentage during the call
B) MOS values throughout the duration of the call
C) 802.11e access category overruns
D) the codec used by the calling phone
E) approximate length of the call in minutes
3. Which DHCP option is used by Vocera badges to reach a Cisco Unified Communications Manager?
A) Set the option to 150.
B) Set the option to 66.
C) No option is required.
D) Set the option to 43.
4. An engineer has been assigned the task of deciding the cell overlap for a wireless voice deployment. Which Cisco measurement recommendation should be considered?
A) The edge of the cell should be below 35 RSSI.
B) The edge of the cell should be -67 dBm.
C) The measurement should be done on the 2.4-GHz band.
D) One AP should be deployed per 3000 square feet.
5. Which one of these options best describes the ideal WLAN design for wireless VoIP clients?
A) larger cells with higher speeds and WPA2 security enabled to ensure the best possible coverage
B) smaller cells with all configurable speeds to ensure that all clients (802.11a/b/g) can associate to the wireless infrastructure
C) smaller cells with higher speeds and CAC-enabled prioritization of WMM clients
D) smaller cells with APs in the inner areas using omnidirectional antennas, and APs on the outer walls using directional antennas facing inward
Solutions:
| Question # 1 Answer: C | Question # 2 Answer: B,D,E | Question # 3 Answer: C | Question # 4 Answer: B | Question # 5 Answer: C |
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