Cisco 642-742 : Implementing Cisco Unified Wireless Voice Networks (IUWVN) v2.0

Exam Code: 642-742

Exam Name: Implementing Cisco Unified Wireless Voice Networks (IUWVN) v2.0

Updated: Sep 11, 2026

Q & A: 190 Questions and Answers

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Cisco 642-742 Exam Syllabus Topics:

Section	Objectives
Wireless Voice Fundamentals	- 802.11 standards and voice considerations - Voice over WLAN concepts
Call Admission Control (CAC)	- Bandwidth management for voice sessions - CAC mechanisms in WLAN environments
Voice Deployment and Troubleshooting	- Common voice quality issues and diagnostics - VoWLAN deployment best practices
Roaming and Mobility	- Fast secure roaming (CCKM, 802.11r concepts) - Layer 2 and Layer 3 roaming behavior
QoS for Wireless Voice	- WMM (Wi-Fi Multimedia) and prioritization - End-to-end QoS design
Cisco Unified Wireless Architecture	- Controller-based WLAN design - Access point and controller interaction

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

Question #1

IGMP snooping has been enabled on a Cisco WLC v7.0, along with any other configurations that are required for wireless multicast. Which statement describes an IGMP leave message to a router when IGMP snooping is enabled?

A. The message is sourced from the wireless client.
B. The message is sourced from the Cisco WLC virtual interface.
C. No message is sent, and the membership is timed out.
D. The message is sourced from the Cisco WLC management interface.
E. The message is sourced from the Cisco WLC dynamic interface.

Reveal Solution Discussion 0

Correct Answer: C 🗳️

Question #2

A customer has upgraded to 802.11n with ClientLink, set to defaults, to improve video performance on legacy clients. They notice that ClientLink is not kicking in for an 802.11a client with 36 Mb data rate and -55db RSSI. What is the problem?

A. data rate too high
B. RSSI too high
C. RSSI too low
D. data rate too low

Reveal Solution Discussion 0

Correct Answer: B 🗳️

Question #3

Which four hardware components are required to make an end-to-end unified wireless VoIP solution? (Choose four.)

A. CAPWAP access points
B. firewalls
C. WLAN controller
D. autonomous access points
E. Cisco Wireless Control System
F. Cisco Unified Communications Manager
G. Cisco Mobility Services Engine server
H. wireless IP phone

Reveal Solution Discussion 0

Correct Answer: A,C,F,H 🗳️

Question #4

Which three call information items does AirMagnet VoFi Analyzer provide? (Choose three.)

A. 802.11e access category overruns
B. co-channel interference percentage during the call
C. approximate length of the call in minutes
D. the codec used by the calling phone
E. MOS values throughout the duration of the call

Reveal Solution Discussion 0

Correct Answer: C,D,E 🗳️

Question #5

A hospital is implementing wireless mobile carts outfitted to provide High-Definition IPTV access for patients. The end-user will need to be able to move around, while maintaining a high definition stream with as few artifacts as possible while viewing. What three technologies need to be utilized to guarantee access at this requirement and how would they be configured? (Choose three.)

A. set controller to Multicast-to-Multicast mode
B. configure the video stream under Media Streams with "High" template
C. set controller to Multicast-to-Unicast mode
D. configure the video stream under Media Streams with "Medium" template
E. set SSID QoS to platinum
F. set SSID QoS to gold

Reveal Solution Discussion 0

Correct Answer: A,B,F 🗳️

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