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Cisco 642-742 Exam Syllabus Topics:
| Section | Objectives |
|---|---|
| Call Admission Control (CAC) | - Bandwidth management for voice sessions - CAC mechanisms in WLAN environments |
| Cisco Unified Wireless Architecture | - Controller-based WLAN design - Access point and controller interaction |
| 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 |
| Wireless Voice Fundamentals | - Voice over WLAN concepts - 802.11 standards and voice considerations |
| QoS for Wireless Voice | - WMM (Wi-Fi Multimedia) and prioritization - End-to-end QoS design |
Cisco Implementing Cisco Unified Wireless Voice Networks (IUWVN) v2.0 Sample Questions:
What is the best practice for configuring data rates for an 802.11g VoWLAN deployment?
- A. Configure a mandatory data rate of 6 Mb/s. Disable data rates below 6 Mb/s, and configure all other data rates as supported.
- B. Configure a mandatory data rate of 12 Mb/s. Disable data rates below 12 Mb/s, and configure all other data rates as supported.
- C. Configure a mandatory data rate of 11 Mb/s. Disable data rates below 11 Mb/s, and configure all other data rates as supported.
- D. Configure mandatory data rates of 12 and 54 Mb/s. Disable data rates below 6 Mb/s, and configure all other data rates as supported.
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 mroute
- B. show ip device tracking all
- C. show ip pim neighbor
- D. show ip igmp groups
Refer to the exhibit.
Voice-bearer traffic is being sent downstream using a WLAN configured for gold QoS. Which two of these options indicate the inner 802.11e QoS markings and QoS CAPWAP
markings that are used at location 1? (Choose two.)
- A. Outer CAPWAP: DSCP AF41
- B. Outer CAPWAP: DSCP AF31
- C. Inner 802.11e: UP 5
- D. Inner 802.11e: UP 4
- E. Outer CAPWAP: CoS 4
- F. Inner 802.11e: UP 3
A customer has upgraded to 802.11n with ClientLink, set to defaults, to improve video performance on legacy clients. They notice that ClientLink is not kicking in for an 802.11a client with 36 Mb data rate and -55db RSSI. What is the problem?
- A. data rate too high
- B. RSSI too high
- C. data rate too low
- D. RSSI too low
Refer to the exhibit.
An engineer notices VoWLAN calls getting dropped and uses Spectrum Expert to analyze the RF utilization. Based on the Spectrum Expert capture, what two options describe the interferer and how to mitigate it? (Choose two.)
- A. DECT 6.0 Cordless phone interference
- B. Radar interference
- C. Disable DFS
- D. microwave oven interference
- E. Disable DCA
- F. Disable RRM
- G. Disable UNII-2 channels
- H. Bluetooth interference
