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Cisco 642-742 Q&A - in .pdf
- Exam Code: 642-742
- Exam Name: Implementing Cisco Unified Wireless Voice Networks (IUWVN) v2.0
- Updated: Nov 03, 2026
- Q & A: 190 Questions and Answers
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- Exam Code: 642-742
- Exam Name: Implementing Cisco Unified Wireless Voice Networks (IUWVN) v2.0
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- Q & A: 190 Questions and Answers
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Cisco 642-742 Exam Syllabus Topics:
| Section | Objectives |
|---|---|
| Topic 1: Multicast over Wireless | - Configure and troubleshoot multicast over wireless - Multicast concepts and implications for wireless |
| Topic 2: Preparing for High-Bandwidth Wireless Applications | - Support for video and latency-sensitive applications - Bandwidth planning for wireless networks |
| Topic 3: Quality of Service (QoS) for Wireless Voice | - Implementing QoS on wireless and wired infrastructure - WLC and controller QoS configuration |
| Topic 4: Voice over Wireless LAN (VoWLAN) Fundamentals | - VoWLAN architecture and call flow - Wireless design considerations for voice |
| Topic 5: VoWLAN Implementation and Troubleshooting | - Configure WLAN for voice - Troubleshoot VoWLAN issues |
Cisco Implementing Cisco Unified Wireless Voice Networks (IUWVN) v2.0 Sample Questions:
Question #1
During the testing and verification phase of an 802.11n deployment, an employee wants to be able to stream video at a much faster rate than the previous 802.11a/b/g deployment. What 802.11n capability can be utilized for this?
- A. Clients can make use of MIMO to aggregate the data sent from the access points whether 802.11n or 802.11a to create a higher throughput network.
- B. Clients are able to utilize High-Rate Direct Sequence Spread Spectrum (HR-DSSS) to reach higher data-rates, which in turn allow for much faster video streaming.
- C. Clients can utilize ClientLink which allows them to use the signal received from 802.11n access points on its various radio chains to perform multi-ratio combining.
- D. Access points and clients are capable of utilizing spatial-multiplexing, multi-ratio combining, and transmit beamforming, which allows for a more efficient wireless spectrum that can utilize higher data-rates.
Correct Answer: D 🗳️
Question #2
A customer has requested their wireless infrastructure to be able to provide voice phones with the ability to indicate to a wireless controller that the call is urgent and needs to be placed immediately. What solution should be recommended to the customer?
- A. configure expedited bandwidth and change the 802.1p value to 7 for platinum QoS
- B. reconfigure the SSID for KTS based CAC to allow for a more granular handling of voice traffic
- C. disable load-based CAC for voice networks to turn off the controllers monitoring of the access point's load, allowing for as many voice calls to be placed as necessary
- D. enable load-based CAC for voice networks and configure expedited bandwidth
Correct Answer: D 🗳️
Question #3
What happens to a wireless client when it moves from one controller to another in a different mobility domain?
- A. It is not possible to roam to a different mobility domain.
- B. Nothing happens as long as the client roams within the same mobility group.
- C. The client will have to reauthenticate, reassociate, and get new IP address information.
- D. The client will have to reauthenticate and reassociate, but will be able to keep its IP address information.
Correct Answer: C 🗳️
Question #4
A company is deploying multicast over wireless that needs to be in a multicast-multicast mode. The access points are not receiving multicast traffic from the wireless controller. What command would display the needed information to determine if the AP has joined the multicast group?
- A. show pim multicast
- B. show igmp routes
- C. show ip mroute
- D. show ip igmp groups
- E. show ip multicast routing
- F. show ip route
Correct Answer: D 🗳️
Question #5
You have recently enabled multicast on your WLAN. When users join the multicast sessions, you see the traffic utilization on all the APs that are controlled by the Cisco WLC v7.0 increase, which includes those APs where there are no multicast clients.
Which configuration parameter needs to be verified to prevent APs with no subscribed multicast clients from receiving traffic?
- A. This is normal operation and cannot be changed.
- B. Switches between the Cisco WLC and APs are not configured for IGMP snooping.
- C. The Cisco WLC is not configured for IGMP snooping.
- D. APs are not configured for IGMP snooping.
- E. The router interface that services the multicast needs to be configured for the sparse-dense multicast mode of operation.
Correct Answer: C 🗳️
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