Cisco 642-427 Online Practice Questions and Exam Preparation

Cisco 642-427 Online Questions & Answers

• Question 91:

  While you implement an action plan while troubleshooting a call setup problem, the symptoms stop.

  Which troubleshooting step is next?

  A. Gather new facts about the situation.
  B. Continue to implement the existing action plan.
  C. Continue to observe the results.
  D. Document the facts.
  A. Gather new facts about the situation.

• Question 92:

  Headquarters reports that some users can call each other but other users cannot call each other.

  Which two troubleshooting tools can isolate why some users cannot call each other in headquarters? (Choose two.)

  A. DNA
  B. Cisco Unified Communications Manager trace
  C. debug voice dialpeer inout on the gateway
  D. debug SCCP on the gateway
  A. DNA
  B. Cisco Unified Communications Manager trace

• Question 93:

  As a network administrator, you should know the features of H.323 gatekeeper. Which H.323 gatekeeper feature allows calls to be routed to a specific zone, regardless of the zone prefix in the address?

  A. Technology prefix with hop-off
  B. Default technology prefix
  C. E.164 registration
  D. Subnet scoping
  A. Technology prefix with hop-off

• Question 94:

  Which troubleshooting step do you take after you define that the problem is a failed call setup?

  A. Gather the facts about the situation.
  B. Consider all the possibilities.
  C. Create an action plan.
  D. Implement an action plan.
  A. Gather the facts about the situation.

• Question 95:

  Which statement indicates something that can cause an inbound PSTN call to an H.323 gateway that is configured in Cisco Unified Communications Manager to fail to ring an IP Phone?

  A. The gateway is not registered in Cisco Unified Communications Manager.
  B. The gateway IP address that is configured in Cisco Unified Communications Manager does not match the IP address that is configured at the gateway in the h323-gataway voip bind srcaddr command.
  C. The Cisco Unified Communications Manager does not have a matching route pattern to match the called number.
  D. The gateway is missing the command allow-connections h323 to h323 under the voice service voip configuration.
  B. The gateway IP address that is configured in Cisco Unified Communications Manager does not match the IP address that is configured at the gateway in the h323-gataway voip bind srcaddr command.

• Question 96:

  As a network technician, you should know the VoIP network components well. Which one of the following components can provide the CAC, bandwidth control and management, and address translation?

  A. Gateway
  B. Gatekeeper
  C. MCU
  D. Call agent
  B. Gatekeeper

• Question 97:

  In a Cisco UCM single-site deployment, please choose the maximum number of IP phones that can register with a UCM cluster.

  A. 2500
  B. 7500
  C. 10,000
  D. 30,000
  D. 30,000

• Question 98:

  Users who call from a Cisco IP Phone to external PBX phones report an echo while their call has sufficient loudness. Which solution most directly reduces this caller echo?

  A. Change the input gain from -3 to -6.
  B. Change the input gain from -3 to -1.
  C. Change the output attenuation from 5 to 1.
  D. Change the output attenuation from 5 to 1 and change the input gain from -3 to -1.
  A. Change the input gain from -3 to -6.

• Question 99:

  You want to configure calls from a branch office with the G.729 codec to interoperate with a device in headquarters that supports only G.711. Which two troubleshooting approaches achieve this requirement? (Choose two.)

  A. Configure the transcoder to use DSP resources on the gateway.
  B. Configure transcoding on the gateway to use resources on Cisco Unified Communications Manager.
  C. Configure transcoding on the gateway to register with SCCP to Cisco Unified Communications Manager.
  D. Configure transcoding on the gateway to register with SIP to Cisco Unified Communications Manager.
  A. Configure the transcoder to use DSP resources on the gateway.
  C. Configure transcoding on the gateway to register with SCCP to Cisco Unified Communications Manager.

• Question 100:

  Users are making calls from Cisco IP Phones that are registered on a Cisco Unified Communications Manager cluster through an H.323 gateway to the PSTN phones. Sometimes these users report that calls are dropped after they have talked for some time. Different Cisco Unified CM servers have been rebooted for testing during production hours. Currently Cisco IOS 12.0 is used on the H.323 gateway.

  Which change helps to prevent calls from dropping when a Cisco Unified CM server is rebooted during testing?

  A. Upgrade the gateway Cisco IOS software to a version later than 12.4(4)9T.
  B. A misconfiguration of calling search spaces must exist. Reconfigure the CSS.
  C. There is no scenario where rebooting an H.323 gateway will allow call survivability.
  D. A misconfiguration of VoIP dial peers to the Cicso Unified CM servers must exist. Reconfigure the VoIP dial peers.
  A. Upgrade the gateway Cisco IOS software to a version later than 12.4(4)9T.