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Cisco 642-742 Exam Syllabus Topics:

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

1. 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 0 (Best Effort).
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 6 (Platinum).

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 IGMP packets from the wireless clients are forwarded to the router without modifications.
C) 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.
D) The router IGMP table is updated with the IP address of the wireless clients as the last reporter.
E) The router IGMP table is updated with the IP address of the Cisco WLC as the last reporter.

3. When inspecting the WCS voice readiness tool, an engineer notices yellow areas. What step should you take to fix this?

A) remove some APs in the area to reduce co-channel interference
B) add additional APs to the coverage area to increase RSSI
C) change the channel on some APs in the area to reduce co-channel interference
D) increase the power of APs in the yellow area to increase RSSI

4. What is the difference between the QoS values on the wired and wireless sides of a WLAN?

A) The wireless side of the network uses WMM, which carries voice in the Gold queue with a CoS of 7. The wired side of the network uses CoS/DSCP values of 5 and EF.
B) The wireless side of the network uses WMM, which carries voice in the Platinum queue with a CoS of 7. The wired side of the network uses CoS/DSCP values of 5 and 40.
C) The wireless side of the network uses WMM, which carries voice in the Gold queue with a CoS of 6. The wired side of the network uses CoS/DSCP values of 5 and EF.
D) The wireless side of the network uses WMM, which carries voice in the Platinum queue with a CoS of 6. The wired side of the network uses CoS/DSCP values of 5 and EF.

5. A network engineer is limiting the number of voice calls on an AP. Which technology should be used?

A) SIP
B) RTP
C) SCCP
D) CAC

Solutions: