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Cisco 642-742 Exam Overview:
| Certification Vendor: | Cisco |
|---|---|
| Exam Name: | Implementing Cisco Unified Wireless Voice Networks (IUWVN) v2.0 |
| Exam Number: | 642-742 |
| Exam Format: | Multiple choice |
| Available Languages: | English |
| Related Certifications: | CCNP Wireless |
| Real Exam Qty: | 188 |
| Sample Questions: | Cisco 642-742 Sample Questions |
| Exam Way: | Onsite at test center or online proctored |
| Pre Condition: | Recommended: Knowledge of wireless networking (e.g., IUWNE or equivalent) and CCNP Wireless track |
| Official Syllabus URL: | https://www.cisco.com/site/us/en/learn/training-certifications/exams/index.html |
Cisco 642-742 Exam Syllabus Topics:
| Section | Objectives |
|---|---|
| Topic 1: Quality of Service (QoS) for Wireless Voice | - WLC and controller QoS configuration - Implementing QoS on wireless and wired infrastructure |
| Topic 2: Multicast over Wireless | - Configure and troubleshoot multicast over wireless - Multicast concepts and implications for wireless |
| Topic 3: Voice over Wireless LAN (VoWLAN) Fundamentals | - VoWLAN architecture and call flow - Wireless design considerations for voice |
| Topic 4: VoWLAN Implementation and Troubleshooting | - Configure WLAN for voice - Troubleshoot VoWLAN issues |
| Topic 5: Preparing for High-Bandwidth Wireless Applications | - Bandwidth planning for wireless networks - Support for video and latency-sensitive applications |
Cisco Implementing Cisco Unified Wireless Voice Networks (IUWVN) v2.0 Sample Questions:
Using proper VoWLAN design practice, what would be the Cisco recommended total number of calls for a properly designed 802.11a cell to ensure call quality?
- A. 27
- B. 25
- C. 20
- D. 4
- E. 14
- F. 7
Correct Answer: C 🗳️
What is the difference between the QoS values on the wired and wireless sides of a WLAN?
- A. The wireless side of the network uses WMM, which carries voice in the Gold queue with a CoS of 6. The wired side of the network uses CoS/DSCP values of 5 and EF.
- B. The wireless side of the network uses WMM, which carries voice in the Platinum queue with a CoS of 7. The wired side of the network uses CoS/DSCP values of 5 and 40.
- C. The wireless side of the network uses WMM, which carries voice in the Platinum queue with a CoS of 6. The wired side of the network uses CoS/DSCP values of 5 and EF.
- D. The wireless side of the network uses WMM, which carries voice in the Gold queue with a CoS of 7. The wired side of the network uses CoS/DSCP values of 5 and EF.
Correct Answer: C 🗳️
What are the results that you can expect when performing a Cisco WLC v7.0 link test on a wireless IP phone?
- A. A device that is not running a version of Cisco Compatible Extensions will show packets
that are sent, packets that are received, local signal strength, and SNR. - B. A device that is not running a version of Cisco Compatible Extensions will show only packets that are sent and received.
- C. The device must be running at least Cisco Compatible Extensions v2 or higher, for the test and results to be successful.
- D. The device must be running at least Cisco Compatible Extensions v4 or higher, for the test and results to be successful.
Correct Answer: A 🗳️
You are getting complaints from Cisco Unified Wireless IP Phone 7925 users that their phones are failing to register with the Cisco Unified Communications Manager Express server and are showing the message "Registering." What is the problem?
- A. The IP phones are failing to receive a DHCP address from the DHCP server.
- B. The DHCP server needs to include the command option 66 ip <ip address> to serve the appropriate load file.
- C. The IP phones are failing to receive their firmware files from the TFTP server.
- D. There is no ephone configuration for each phone in the Cisco Unified CME device.
Correct Answer: C 🗳️
Your Cisco Unified Wireless IP Phones 7921G and 7925G are associated with the VoWLAN at your branch office. When they attempt to place a call, the call fails to go through and you receive a fast busy tone. What is the issue?
- A. The wireless phones failed to register with the Cisco Unified Communications Manager cluster.
- B. The Cisco Unified Communications Manager cluster invoked CAC to preserve IP WAN voice bandwidth.
- C. Automatic alternate routing has been invoked.
- D. The local gateway rejected the call because of high IP WAN utilization.
Correct Answer: B 🗳️
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