Cisco 642-742 Online Practice Questions and Exam Preparation

Cisco 642-742 Online Questions & Answers

• Question 31:

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

• Question 32:

  A customer reports that wireless clients are not able to receive multicast data from known working multicast servers on the wired network. The client is connecting at the highest mandatory wireless rate of 24 Mbps and the wireless controller is configured for multicast-unicast mode. What three actions should the engineer take next to troubleshoot the issue? (Choose three.)

  A. verify that the L3 interfaces are configured for pim sparse-dense-mode on the VLAN servicing the wireless access points as well as the wireless controller's management VLAN
  B. change the wireless controller from Multicast-Unicast mode to Multicast-Multicast mode and assign a multicast address in the 239.X.X.X/8 subnet
  C. verify that IGMP snooping is disabled on the wireless controller since the access points are handling IGMP messages from the clients
  D. verify that Global Multicast mode has been enabled
  E. make sure the highest mandatory rate is set to 54 Mbps so that the multicast traffic has sufficient bandwidth
  F. verify Multicast Listener Discovery (MLD) v1 snooping has been enabled to keep track of and deliver IPv4 multicast flows
  A. verify that the L3 interfaces are configured for pim sparse-dense-mode on the VLAN servicing the wireless access points as well as the wireless controller's management VLAN
  B. change the wireless controller from Multicast-Unicast mode to Multicast-Multicast mode and assign a multicast address in the 239.X.X.X/8 subnet
  D. verify that Global Multicast mode has been enabled

• Question 33:

  A web browser is opened to a new Cisco Unified Wireless IP Phone 7921G or 7925G connected to a windows computer via USB. Which statement describes the ability to read and write configuration parameters to prime the phone for its first VoWLAN association and its association to a Cisco Unified Communications Manager?

  A. Phones are always read-only.
  B. Phones are read-only and require user to be authenticated as administrator for write access.
  C. Phone read/write access depends on the firmware version.
  D. Phone depends on Cisco Unified Communications Manager configuration.
  C. Phone read/write access depends on the firmware version.

• Question 34:

  Which four statements describe the attributes of streaming 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.
  B. Packet loss is limited to 5 percent.
  D. One-way latency is limited to a few seconds.
  F. Jitter has no significant requirements.
  G. QoS marking is at CS4.

• Question 35:

  What is the minimum overhead (header plus FCS) added by 802.11 (no encryption, no WMM) between a wireless client and an AP?

  A. 18 B
  B. 24 B
  C. 28 B
  D. 35 B
  E. 36 B
  F. 48 B
  C. 28 B

• Question 36:

  DRAG DROP

  Select and Place:

  

  

• Question 37:

  Which two statements describe the capability of TSM to collect statistics that are related to VoWLAN on Cisco WLC v7.0? (Choose two.)

  A. The feature is enabled by default.
  B. It is operational only on 802.11a/n radio.
  C. It is operational on both 802.11g/b/n and 802.11a/g radio.
  D. It requires Cisco Compatible Extensions clients for uplink statistics only.
  E. It requires Cisco Compatible Extensions clients for uplink and downlink statistics.
  C. It is operational on both 802.11g/b/n and 802.11a/g radio.
  D. It requires Cisco Compatible Extensions clients for uplink statistics only.

• Question 38:

  The AP has been properly configured for a VoWLAN survey. The RF environment contains a noise of -87 to -90 dBm. What would be the target value for the cell edge reading?

  A. -55 dBm
  B. -60 dBm
  C. -62 dBm
  D. -67 dBm
  E. -70 dBm
  F. -73 dBm
  C. -62 dBm

• Question 39:

  You have a VoWLAN configured for platinum QoS, WMM, and CAC. IP phones for this VoWLAN include the Nokia and Cisco Unified Wireless IP Phones 7920G (pre-v2.0 firmware), 7921G, and 7925G. The Wireless IP Phones 7921G and 7925G work properly, but the Nokia and the Wireless IP Phones 7920G associate with the WLAN but cannot place calls. What is the issue?

  A. The lowest mandatory speed in the WLAN is too high and needs to be reduced.
  B. The Cisco Unified Wireless IP Phones 7920G and Nokia IP phones do not support TSPEC.
  C. EDCA needs to be enabled on the WLAN.
  D. HCCA needs to be enabled on the WLAN.
  E. The reserved roaming bandwidth setting is set too low.
  F. The expedited bandwidth setting needs to be enabled.
  B. The Cisco Unified Wireless IP Phones 7920G and Nokia IP phones do not support TSPEC.

• Question 40:

  You are deploying a combination of Cisco Unified Wireless IP Phones 7921G and 7925G at your branch offices in a centralized call processing environment that requires high availability at branch locations. Which three components need to be verified before the wireless IP phones can be deployed? (Choose three.)

  A. Sufficient SRST license support at each branch location
  B. Support for local voice mail
  C. Branch gateways support MoH
  D. Properly configured QoS over the IP WAN links
  E. Support for single number reach
  F. Support for E.164 dialing
  G. Sufficient IP phone licenses in the Cisco Unified Communications Manager cluster
  A. Sufficient SRST license support at each branch location
  D. Properly configured QoS over the IP WAN links
  G. Sufficient IP phone licenses in the Cisco Unified Communications Manager cluster