Cisco 642-742 Online Practice Questions and Exam Preparation

Cisco 642-742 Online Questions & Answers

• Question 71:

  Refer to the exhibit.

  

  A customer with a high-density deployment has called stating there have been voice quality issues with roaming clients. Given the configuration, what is the problem?

  A. Load-Balancing is enabled and sending reason code 17 to roaming voice clients.
  B. Band-Select has not been enabled and is allowing the voice client to switch bands when roaming.
  C. DTIM should be configured to 2 on both 2.4 and 5ghz to aid in delivery of wireless frames during roaming.
  D. Static IP tunneling should be enabled so that the voice clients can be tunneled properly.
  A. Load-Balancing is enabled and sending reason code 17 to roaming voice clients.

• Question 72:

  You have two packets with decimal ToS values of 32 and 34. What are their results, respectively, in an IP precedence-only device?

  A. Both packets have an IP precedence tag of CS4, and the packet with the decimal value of 34 has a higher drop probability.
  B. The packet with the decimal value of 32 has an IP precedence tag of CS4, while the other decimal value of 34 is ignored and treated as best effort.
  C. The packet with the decimal value of 34 has an IP precedence tag of CS4, while the other decimal value of 32 is ignored and treated as best effort.
  D. Both packets have a decimal value that results in an IP precedence tag of CS4.
  D. Both packets have a decimal value that results in an IP precedence tag of CS4.

• Question 73:

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

• Question 74:

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

• Question 75:

  What is the main difference between the Cisco Unified Wireless IP Phone 7921G and the Cisco Unified Wireless IP Phone 7925G?

  A. The 7925G supports 802.11a/b/g, whereas the 7921G supports only 802.11b/g.
  B. The 7925G is suited for a more rugged environment.
  C. The 7925G has support for 802.11n, whereas the 7921G does not.
  D. 7925G supports WPA2, whereas the 7921G supports only WPA1.
  B. The 7925G is suited for a more rugged environment.

• Question 76:

  A network engineer is troubleshooting a VoWLAN deployment with VoFi Analyzer and sees a WiMOS score of 2.9. How would the tool describe this value?

  A. Unacceptable
  B. Many dissatisfied
  C. Some dissatisfied
  D. All satisfied
  B. Many dissatisfied

• Question 77:

  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
  C. Voice Audit Report

• Question 78:

  An engineer has installed a new voice WLAN. Which three configurations would the engineer verify for QoS on the controller? (Choose three.)

  A. IEEE 802.1X and Cisco Centralized Key Management
  B. Platinum QoS for the VoWLAN
  C. WMM allowed
  D. client load balancing
  E. client band select
  F. DHCP address assignment required
  A. IEEE 802.1X and Cisco Centralized Key Management
  B. Platinum QoS for the VoWLAN
  C. WMM allowed

• Question 79:

  A customer has asked an engineer to design wireless voice for a Mesh deployment. What two design options are best practices per Cisco's design guide? (Choose two.)

  A. indoor Mesh
  B. outdoor Mesh
  C. 3 Hops Max
  D. 4 Hops Max
  E. 3 MAPs per RAP Max
  F. 5 MAPs per RAP Max
  A. indoor Mesh
  E. 3 MAPs per RAP Max

• Question 80:

  During the testing and verification phase of an 802.11n deployment, an employee wants to be able to stream video at a much faster rate than the previous 802.11a/b/g deployment. What 802.11n capability can be utilized for this?

  A. Access points and clients are capable of utilizing spatial-multiplexing, multi-ratio combining, and transmit beamforming, which allows for a more efficient wireless spectrum that can utilize higher data- rates.
  B. Clients can make use of MIMO to aggregate the data sent from the access points whether 802.11n or 802.11a to create a higher throughput network.
  C. Clients can utilize ClientLink which allows them to use the signal received from 802.11n access points on its various radio chains to perform multi-ratio combining.
  D. Clients are able to utilize High-Rate Direct Sequence Spread Spectrum (HR-DSSS) to reach higher data-rates, which in turn allow for much faster video streaming.
  A. Access points and clients are capable of utilizing spatial-multiplexing, multi-ratio combining, and transmit beamforming, which allows for a more efficient wireless spectrum that can utilize higher data- rates.