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Product Description:
Exam Number/Code: 642-742
Exam name: CCNP Wireless - IUWVN
n questions with full explanations
Certification: Cisco Certification
Last updated on Global synchronizing

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2016 May 642-742 Study Guide Questions:

Q21. Which WCS tool will be especially helpful to ensure that all VoWLAN configurations are consistent across all controllers? 

A. Inspect VoWLAN Readiness 

B. Traffic Stream Metrics 

C. Voice Audit Report 

D. Voice Diagnostic 

E. Monitor Client Detail 

Answer: C 


Q22. What three minimal configurations are required for a correctly scaled multicast configuration using WLC v7.0? (Choose three.) 

A. Enable global multicast mode 

B. Enable IGMP snooping 

C. Configure IGMP timeout for 60 seconds 

D. Configure IGMP query interval for 20 seconds 

E. Enable WLAN multicast VLAN feature 

F. Enable AP multicast mode for multicast 

G. Enable AP multicast mode for Unicast 

Answer: ABF 


Q23. Which two pieces of information from the Cisco WLC v7.0 GUI does Monitor > Clients provide about a VoWLAN client? (Choose two.) 

A. RSSI at current AP 

B. WMM state 

C. current MOS 

D. current RF channel 

E. current data rate 

Answer: AB 


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Q24. Refer to the exhibit. 


Voice-bearer traffic is being sent downstream using a WLAN configured for gold QoS. Which two of these options indicate the inner 802.11e QoS markings and QoS CAPWAP markings that are used at location 1? (Choose two.) 

A. Inner 802.11e: UP 5 

B. Inner 802.11e: UP 4 

C. Outer CAPWAP: CoS 4 

D. Inner 802.11e: UP 3 

E. Outer CAPWAP: DSCP AF31 

F. Outer CAPWAP: DSCP AF41 

Answer: AF 


Q25. Refer to the exhibit. 


Voice signaling traffic is being sent upstream using a WLAN configured for bronze QoS. Assume that Layer 3 switches between the controller and the AP use the default and recommended CoS-to-DSCP and DSCP-to-CoS maps. What CAPWAP QoS markings are used in the header at location 1? 

A. DSCP CS1 

B. CoS 1 

C. DSCP 46 and CoS 5 

D. CoS 3 

E. DSCP CS1 and CoS 1 

F. DSCP 46 

G. DSCP AF31 

H. DSCP AF31 and CoS 3 

Answer: E 


Q26. Which of these statements best describes the Cisco Compatible Extensions "AP Specified Max Power" feature? 

A. The Cisco Compatible Extensions-capable client sets its power independently and confirms with the AP if its setting is supported. 

B. After a Cisco Compatible Extensions client associates to an AP, that AP will inform the other surrounding APs what power settings that client supports in case it roams to another AP. 

C. The AP automatically sets the transmit power of each of its Cisco Compatible Extensions-capable clients. 

D. The AP automatically sets the transmit and receive power of each of its Cisco Compatible Extensions-capable clients. 

Answer: C


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Q27. WLCs v7.0 have been configured for multicast and IGMP snooping enabled, with all other parameters set to default. A wireless client actively receiving a multicast group roams from WLC1 to WLC2, both of which are configured for the client IP subnet. Which statement describes the roaming process? 

A. There is no required action from the client and WLC2 becomes the local anchor controller. 

B. A new IGMP packet is required from the client and WLC2 becomes the local anchor controller. 

C. There is no required action from the client and WLC2 becomes foreign controller and WLC1 becomes anchor controller. 

D. A new IGMP packet is required from the client and WLC2 becomes foreign controller and WLC1 becomes anchor controller. 

Answer: A 


Q28. Which four statements describe attributes of interactive video? (Choose four.) 

A. Packet loss is limited to 1 percent. 

B. Packet loss is limited to 5 percent. 

C. One-way latency is limited to 150 ms. 

D. One-way latency is limited to a few seconds. 

E. Jitter is limited to 30 ms. 

F. Jitter has no significant requirements. 

G. QoS marking is at CS4. 

H. QoS marking is at AF41. 

Answer: ACEH 


Q29. Which two statements correctly describe WLAN QoS configuration related to WMM? (Choose two.) 

A. 7920 AP CAC mode is not compatible with WMM policy and cannot be used at the same time. 

B. 7920 Client CAC mode is not compatible with WMM policy and cannot be used at the same time. 

C. 7920 AP CAC and 7920 client CAC modes are for 802.11b/g/n only. 

D. 7920 AP CAC and 7920 client CAC modes are for 802.11a/n only. 

E. 7920 AP CAC and 7920 client CAC modes are for 802.11a/b/g/n. 

Answer: BC 


Q30. What is the best practice for configuring data rates for an 802.11a VoWLAN deployment? 

A. Configure mandatory data rates of 9 and 54 Mb/s. Disable data rates below 6 Mb/s and all other data rates as supported. 

B. Configure a mandatory data rate of 6 Mb/s. Disable data rates below 6 Mb/s and configure all other data rates as supported. 

C. Configure a mandatory data rate of 54 Mb/s. Disable data rates below 36 Mb/s and configure all other data rates as supported. 

D. Configure a mandatory data rate of 12 Mb/s. Disable data rates below 12 Mb/s and all other data rates as supported. 

Answer: D 



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