Cisco 642-427 Online Practice Questions and Exam Preparation

Cisco 642-427 Online Questions & Answers

• Question 21:

  Refer to the Exhibit.

  

  When a Cisco Unified Communications Manager Express advertises directory number pattern in the exhibit. What would the learned pattern be in the RTMT tool on the Cisco Unified Communication Manager?

  A. \+1408[2-9]XXXXXX and the ToDID will be 0:
  B. 1408[2-9]XXXXXX and the ToDID will be 0:+1408[2-9]XXXXXX
  C. \+1408[2-9]XXXXXX and the ToDID will be 0:+1408[2-9]XXXXXX
  D. \+1408[2-9]XXXXXX and the ToDID will be empty
  E. [2-9] XXXXXX and the ToDID will be 0:+1408[2-9]XXXXXX
  D. \+1408[2-9]XXXXXX and the ToDID will be empty

• Question 22:

  You are a network technician with many years' experience. Many users complain that they can hear echo when their calls go out an H.323 gateway. You have made some testing for the gateway and have changed the configuration. So the ERL level turns to be 6 dB. Furthermore, the echo-cancel coverage value is raised to 64 ms. Please choose the effect on the voice quality after this modification.

  A. Consonants will be chopped by the echo canceller.
  B. The increase in echo-cancel coverage will have no effect on voice quality.
  C. The ends of sentences will be chopped by the echo canceller.
  D. The echo canceller will take 2-3 seconds longer to converge at the beginning of the call.
  D. The echo canceller will take 2-3 seconds longer to converge at the beginning of the call.

• Question 23:

  Look at the following exhibit carefully. You are a network technician working in a middle-sized company. Some users complain that the call is always dropped as soon as it connects when they dial from BR1 to HQ through the IP WAN. Please choose the most possible reason of this issue from the following statements.

  

  A. H.245 capabilities exchange has failed due to insufficient bandwidth.
  B. A codec mismatch has occurred and transcoders or additional transcoding resources need to be configured at HQ.
  C. Packet loss has kept H.225 setup messages from completing the call.
  D. MTP resources need to be configured on the BR1 gateway.
  B. A codec mismatch has occurred and transcoders or additional transcoding resources need to be configured at HQ.

• Question 24:

  Refer to the exhibit. Click on the GK icon to see output of the show gatekeeper endpoint command. Click on Callmanger cluster to view the trunk configuration screens. Click the X in each popup to return to the item.

  A gatekeeper has been configured on the 10.1.110.1 router to support three local zones. West, East and EMEA. When you do a show gatekeeper endpoints command the west zone device is missing. What needs to be done to the

  configuration in the CallManager trunk.

  Hot Area:

  

  

• Question 25:

  During production hours, some users copy 10 Gigabyte files to the headquarters servers from branch PCs over the T-1 WAN link. Branch users report very poor audio quality when they call users at headquarters. Which option most effectively improves the poor audio quality?

  A. Increase the quantity on the priority command.
  B. Increase the quantity on the bandwidth command.
  C. Apply QoS on voice-port 0/0/0:23 by adding the command service-policy output voice.
  D. Remove the command random-detect from the branch gateway configuration.
  A. Increase the quantity on the priority command.

• Question 26:

  As a network administrator, you should be familiar with various commands. Which command can be used to enable a SIP user agent on a Cisco router?

  A. sip-ua interface configuration mode subcommand
  B. sip-ua dial-peer configuration mode subcommand
  C. sip-ua global configuration mode command
  D. No special command is required. SIP is on by default.
  C. sip-ua global configuration mode command

• Question 27:

  Which Cisco Unified Communications Manager troubleshooting tool can be used to look at detailed specific events, such as dial plan digit analysis, as they die happening?

  A. traceroutes
  B. RTMT real-time trace
  C. Cisco Unified Communications Manager alerts
  D. Cisco Unified Dialed Number Analyzer
  E. RTMT performance log viewer
  F. syslog output
  B. RTMT real-time trace

• Question 28:

  Refer to the exhibits.

  

  

  

  

  When the IP phone 2001 places a call to 9011 49403021 56001, the call is sent to the Cisco Unified Border Element as 40302156001 which is what the ITSP expects to receive. The ITSP support personnel claim that they never saw the call. Issuing the debug CCSIP message command on the Cisco Unified Border Element results in the message "SIP/2 0 404 Not Found".

  Refer to the Cisco Unified Border Element configuration, debug voice dial and ccsip messages exhibits. Which situation can cause this issued?

  A. The Cisco Unified Bolder Element is configured as an MGCP gateway also so that the call is attempted via the PSTN
  B. The command allow-connections sip to h323 is missing
  C. SIP error 404 means that a codec mismatch occurred Cisco Unified Communications Manager is sending the call as an early offer with G.711 codec.
  D. The Cisco Unified Communications Manager is rnisconfigured. The SIP invite should be sent to the ITSP at 10.1.2.1.2. The debug ccsip message shows the SIP invite being sent to 10.12.1.2.
  B. The command allow-connections sip to h323 is missing

• Question 29:

  Refer to the exhibit. You have received a trouble ticket stating that calls to local PSTN numbers are failing. To place a call, Cisco Unified CallManager users dial the access code "9," followed by seven digits. After entering the debug voice dialpeer command on the H.323 gateway, you have the user attempt the call again.

  

  Based on the debug output, what is the most likely cause of this problem?

  A. The call is not matching an inbound dial peer resulting in a codec mismatch.
  B. Cisco Unified CallManager is stripping the access code, resulting in only seven digits being sent to the gateway.
  C. There is a physical layer issue with the circuit.
  D. The gateway dial peer needs to prefix the access code to the called number.
  B. Cisco Unified CallManager is stripping the access code, resulting in only seven digits being sent to the gateway.

• Question 30:

  In a Cisco Unified Communications Manager cluster, you make a few changes to the publisher server. However, the phones that are registered with the subscriber server do not receive these changes. You verify that the publisher and

  subscriber servers are up and running in the cluster.

  What do you need to do to resolve this problem?

  A. Reboot the publisher server.
  B. Reboot the subscriber servers.
  C. Manually reload the configuration on the phones.
  D. Fix the replication between the publisher and subcriber servers.
  E. Manually copy the database changes from the publisher to the subscriber.
  F. Re-set up the database replication between the publisher and subscriber.
  D. Fix the replication between the publisher and subcriber servers.