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Cisco 642-742 Exam Syllabus Topics:

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

1. What protocol can be enabled to listen in on IPv4 multicast streams and maintain a map of what each client requests on a wireless LAN controller?

A) ICMP
B) IGMP
C) SIP
D) MLD
E) PAP
F) NTP

2. 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 router IGMP table is updated with the IP address of the Cisco WLC as the last reporter.
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 received at the WLC and are used to update the router via a Cisco Group Management Protocol update from the Cisco WLC.
E) The IGMP packets from the wireless clients are forwarded to the router without modifications.

3. VoIP clients can be impacted by jitter. Which of these statements best describes jitter?

A) Jitter occurs because the receiver buffer is smaller than the sender buffer, thus packets are dropped and voice quality becomes worse.
B) A best practice to avoid jitter is to ensure that the end-to-end round-trip time does not exceed 150 ms.
C) Jitter can be reduced by designing cells that use only the 802.11a frequency band.
D) Jitter is defined as variation in the delay of received packets.

4. When setting up a VoWLAN deployment with Nokia E-Series dual-mode phones and Cisco 7925G phones, the engineer notices the Nokia phones work over cellular but fail over WiFi, whereas the Cisco phones work fine. What setting would cause this behavior?

A) CCKM disabled
B) WPA2 Enterprise used
C) CCKM enabled
D) SSID set to non-broadcast
E) SSID set to broadcast
F) WPA Enterprise used

5. A trouble ticket has been turned in for a voice over wireless deployment. The customer cannot edit network profiles on their 7925 series phones and states that the profiles are locked. What key combination will unlock the profiles for editing?

A) **#
B) **#123
C) **#**
D) 123456789*0#

Solutions: