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Cisco 642-742 Exam Syllabus Topics:
| Section | Objectives |
|---|---|
| Cisco Unified Wireless Architecture | - Controller-based WLAN design - Access point and controller interaction |
| Wireless Voice Fundamentals | - 802.11 standards and voice considerations - Voice over WLAN concepts |
| Call Admission Control (CAC) | - Bandwidth management for voice sessions - CAC mechanisms in WLAN environments |
| QoS for Wireless Voice | - WMM (Wi-Fi Multimedia) and prioritization - End-to-end QoS design |
| Roaming and Mobility | - Layer 2 and Layer 3 roaming behavior - Fast secure roaming (CCKM, 802.11r concepts) |
| Voice Deployment and Troubleshooting | - VoWLAN deployment best practices - Common voice quality issues and diagnostics |
Cisco Implementing Cisco Unified Wireless Voice Networks (IUWVN) v2.0 Sample Questions:
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 igmp groups
- B. show ip device tracking all
- C. show ip pim neighbor
- D. show ip mroute
Correct Answer: D 🗳️
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 5, the AP switchport has been configured to trust DSCP, and the controller's switchport to trust CoS.
- C. 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.
- 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.
Correct Answer: B 🗳️
You have two packets with decimal ToS values of 32 and 34. What are their results, respectively, in an IP precedence-only device?
- A. The packet with the decimal value of 34 has an IP precedence tag of CS4, while the other decimal value of 32 is ignored and treated as best effort.
- B. Both packets have a decimal value that results in an IP precedence tag of CS4.
- C. The packet with the decimal value of 32 has an IP precedence tag of CS4, while the other decimal value of 34 is ignored and treated as best effort.
- D. Both packets have an IP precedence tag of CS4, and the packet with the decimal value of 34 has a higher drop probability.
Correct Answer: B 🗳️
What happens to a wireless client when it moves from one controller to another in a different mobility domain?
- A. The client will have to reauthenticate, reassociate, and get new IP address information.
- B. Nothing happens as long as the client roams within the same mobility group.
- C. The client will have to reauthenticate and reassociate, but will be able to keep its IP address information.
- D. It is not possible to roam to a different mobility domain.
Correct Answer: A 🗳️
Which two statements describe the capability of TSM to collect statistics that are related to VoWLAN on Cisco WLC v7.0? (Choose two.)
- A. It requires Cisco Compatible Extensions clients for uplink statistics only.
- B. It is operational only on 802.11a/n radio.
- C. It is operational on both 802.11g/b/n and 802.11a/g radio.
- D. The feature is enabled by default.
- E. It requires Cisco Compatible Extensions clients for uplink and downlink statistics.
Correct Answer: A,C 🗳️
