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Cisco 642-742 Exam Syllabus Topics:

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

1. Which two statements are correct if IGMP snooping is enabled on a Cisco WLC v7.0? (Choose two.)

A) The IGMP packets from the wireless clients are received at the Cisco WLC, which generates a query for the client.
B) The IGMP packets from the wireless clients are received at the WLC and are used to update the router via a Cisco Group Management Protocol update from the Cisco WLC.
C) The router IGMP table is updated with the IP address of the wireless clients as the last reporter.
D) The IGMP packets from the wireless clients are forwarded to the router without modifications.
E) The router IGMP table is updated with the IP address of the Cisco WLC as the last reporter.

2. A wireless customer has called with a problem regarding voice calls. When a person is put on hold, there is silence and the music on hold does not come across. What is a requirement of music on hold?

A) Multicast routing should be configured at least to the wireless controller and client dynamic interfaces.
B) There needs to be multicast routing configured network wide from the access point to the wireless controller.
C) The music on hold's multicast address needs to be configured for multicast direct.
D) The wireless voice network needs to be configured for a QoS of platinum to permit the multicast traffic.

3. Refer to the exhibit.

A customer is looking to deploy local radius authentication on their WLAN controller. After configuration has been completed, the administrator found that computers could authenticate; however, the VoIP phones could not. What is the problem given the output?

A) The EAP request-timeout is too short for the wireless phone to process the PAC from the WLAN controller.
B) EAPOL-Key Max Retries should be set to 12 to ensure the wireless phone can authenticate.
C) EAPOL-Key timeout should be set to at least 20,000 Milliseconds to allow the PAC to be processed.
D) The EAP Broadcast Key interval is set to 1 hour however should be 8 hours.

4. A customer using a 7925 phone reports that sometimes the music on hold does not come through or is choppy. The engineer checks the location history and notices it tends to occur toward the edge of the cell. The APs have their data rates set to 12Mbps as mandatory where all rates below are disabled. What is the cause of this issue?

A) mandatory data rates set too high
B) beacons have been disabled
C) unicast is enabled
D) the phone requires the 11Mbps rate

5. Which one of these options best describes the ideal WLAN design for wireless VoIP clients?

A) smaller cells with APs in the inner areas using omnidirectional antennas, and APs on the outer walls using directional antennas facing inward
B) larger cells with higher speeds and WPA2 security enabled to ensure the best possible coverage
C) smaller cells with all configurable speeds to ensure that all clients (802.11a/b/g) can associate to the wireless infrastructure
D) smaller cells with higher speeds and CAC-enabled prioritization of WMM clients

Solutions: