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

642-742 real exams

Exam Code: 642-742

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

Updated: May 26, 2026

Q & A: 190 Questions and Answers

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

1. Which three options are benefits of U-APSD? (Choose three.)

A) increased call capacity
B) bandwidth reservation
C) optimized power-save mode periods
D) priority bandwidth and polling
E) synchronization of the transmission and reception of voice frames


2. A downstream packet containing a DSCP value arrives at the WLC Ethernet interface from the wired source network. The WLC is configured for QoS WLAN 802.1p mapping. How does the WLC treat the CAPWAP QoS marking when leaving the controller interface for the respective AP and final wireless client destination?

A) No outer CAPWAP QoS tag is applied, but the original DSCP is maintained inside CAPWAP.
B) The outer CAPWAP CoS is marked and capped while the inner DSCP maintains the original marking.
C) The outer CAPWAP DHCP is marked and capped without any inner DSCP value.
D) No outer CAPWAP or inner QoS tagging is applied.


3. What are two benefits that result from Cisco WLC configuration of DCA for 5-GHz VoWLAN deployments? (Choose two.)

A) Adjust RRM power thresholds
B) Avoid nearby radar
C) Avoid channels that are affected by a microwave oven
D) Manually remove channels that are not supported by VoWLAN clients
E) Avoid 802.11n 40-MHz channels


4. A wired packet that is marked for QoS priority CS4 arrives on VLAN-4 at the Cisco WLC v7.0, with a destination of a WLAN SSID-4. The Cisco WLC is configured for the wired and wireless QoS level of Silver. The infrastructure routers and switches have incorrect QoS configurations. They have mismarked the CAPWAP outer header to a QoS priority EF.
Which statement is true about how the packet is sent from the AP to the final non-WMM wireless client?

A) The AP sends the packet with an 802.11 priority tag of 5 (Gold).
B) The AP sends the packet with an 802.11 priority tag of 6 (Platinum).
C) The AP sends the packet with an 802.11 priority tag of 3 (Silver).
D) The AP sends the packet with an 802.11 priority tag of 0 (Best Effort).


5. Which two multicast modes are valid for use with Ethernet bridging on a mesh AP? (Choose two.)

A) in
B) mesh bridge in
C) bidirectional bridge
D) out
E) regular


Solutions:

Question # 1
Answer: A,C,E
Question # 2
Answer: B
Question # 3
Answer: B,D
Question # 4
Answer: D
Question # 5
Answer: A,E

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