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Cisco 642-742 Exam Syllabus Topics:

SectionObjectives
Quality of Service (QoS) for Wireless Voice- Implementing QoS on wireless and wired infrastructure
- WLC and controller QoS configuration
Voice over Wireless LAN (VoWLAN) Fundamentals- VoWLAN architecture and call flow
- Wireless design considerations for voice
VoWLAN Implementation and Troubleshooting- Troubleshoot VoWLAN issues
- Configure WLAN for voice
Preparing for High-Bandwidth Wireless Applications- Bandwidth planning for wireless networks
- Support for video and latency-sensitive applications
Multicast over Wireless- Configure and troubleshoot multicast over wireless
- Multicast concepts and implications for wireless

Cisco Implementing Cisco Unified Wireless Voice Networks (IUWVN) v2.0 Sample Questions:

Question #1

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 pim neighbor
  • B. show ip igmp groups
  • C. show ip device tracking all
  • D. show ip mroute
Reveal Solution  Discussion  0

Correct Answer: D  🗳️

Question #2

After debugging a VoWLAN client that is experiencing dropped calls, it has been found that the client is requesting a new DHCP address every time the client roams to a new AP. What should be configured in the WLAN?

  • A. Deselect the enable session timeout.
  • B. Deselect the DHCP address assignment required option.
  • C. Select the DHCP server override option.
  • D. Decrease the DHCP allocated lease time to 0.
  • E. Increase the DHCP allocated lease time for wireless clients.
  • F. Select the central DHCP processing option.
Reveal Solution  Discussion  0

Correct Answer: B  🗳️

Question #3

Refer to the exhibit.

Voice signaling traffic is being sent upstream using a WLAN configured for bronze QoS. Assume that Layer 3 switches between the controller and the AP use the default and recommended CoS-to-DSCP and DSCP-to-CoS maps. What CAPWAP QoS markings are used in the header at location 1?

  • A. DSCP AF31
  • B. DSCP 46
  • C. CoS 1
  • D. DSCP AF31 and CoS 3
  • E. DSCP CS1 and CoS 1
  • F. CoS 3
  • G. DSCP CS1
  • H. DSCP 46 and CoS 5
Reveal Solution  Discussion  0

Correct Answer: E  🗳️

Question #4

A network engineer is configuring CAC on a WLC. If CAC is configured with 85% of the total radio bandwidth on a 5-GHz radio, how many clients can be accommodated?

  • A. 22
  • B. 12
  • C. 15
  • D. 5
Reveal Solution  Discussion  0

Correct Answer: A  🗳️

Question #5

Enhanced distributed channel access provides contention-free access to the channel for a period. What is the name of this amendment?

  • A. 802.1q
  • B. 802.1e
  • C. 802.1p
  • D. 802.1d
  • E. WMM
Reveal Solution  Discussion  0

Correct Answer: B  🗳️

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