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Cisco 642-742 Exam Syllabus Topics:

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

1. 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) Decrease the DHCP allocated lease time to 0.
D) Select the central DHCP processing option.
E) Select the DHCP server override option.
F) Increase the DHCP allocated lease time for wireless clients.

2. 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) Switches between the Cisco WLC and APs are not configured for IGMP snooping.
B) APs are not configured for IGMP snooping.
C) The Cisco WLC is not configured for IGMP snooping.
D) The router interface that services the multicast needs to be configured for the sparse-dense multicast mode of operation.
E) This is normal operation and cannot be changed.

3. An engineer finishes configuring a voice over wireless deployment. However, during the
testing phase, the 7925 series phones are not able to complete calls and display Network Busy. CAC has been configured for the wireless system. What action should the engineer take next to troubleshoot the issue?

A) turn off traffic stream metrics
B) modify the SIP CAC Access Control List on the controller to permit voice traffic for 7925 phones
C) check that the lowest data rate is 5.5Mbps to support TSPEC, and verify that the SSID is set to Platinum
D) ensure the lowest data rate is 12Mbps and set to Mandatory, and verify there is enough allocated bandwidth to support voice calls

4. A network engineer observes a spike in controller CPU overhead and overall network utilization after enabling multicast on a controller with 500 APs. What feature is necessary to correct the issue?

A) multicast AP Multicast Mode
B) unicast AP Multicast Mode
C) broadcast forwarding
D) controller IGMP snooping

5. You are given a new single Cisco 2500 Series Wireless Controller with 8 to 12 APs. Which two statements describe the minimum required multicast configuration? (Choose two.)

A) Enable Global Multicast Mode.
B) Enable WLC to AP Multicast Mode for unicast.
C) Enable the WLAN Multicast VLAN feature.
D) Enable WLC to AP Multicast Mode for multicast.
E) Configure the IGMP Query Interval for 20 seconds.
F) Enable IGMP Snooping.
G) Configure the IGMP Timeout for 60 seconds.

Solutions: