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日期:2009-9-30 9:27

最新Cisco 642-426题库更新分享

最新Cisco 642-426题库更新分享,pass4side 有更多的642题库下载

1. Which three capabilities cannot be configured if the default dial peer is matched? (Choose three.)
A. disable DID
B. invoke a Tcl application
C. enable dtmf-relay
D. disable VAD
E. set codec to G.711
F. set preference to 1
Answer: BCD

2. You have received a trouble ticket stating that an executive with an account at a bank cannot retrieve account information by phone. When the executive calls the bank, the call is answered and the executive is prompted to enter the account code. However, the bank does not seem to recognize the DTMF tones and disconnects the call.
What is a possible solution to this problem?
A. Configure the voice rtp send-recv command in the gateway.
B. Set the Cisco Unified CallManager service parameter ToSendH225UserInfoMsg to True.
C. Configure the progress_ind setup enable 3 command under the gateway VoIP dial peer.
D. Configure the progress_ind alert enable 8 command under the gateway POTS dial peer.
Answer: A

3. You have received a trouble ticket that says users are experiencing echo when their calls go out an H.323 gateway. You have tested the gateway and have modified the configuration so that the ERL level is now 6 dB. You also increased the echo-cancel coverage value to 64 ms.
How will this impact voice quality after this change?
A. The increase in echo-cancel coverage will have no effect on voice quality.
B. The ends of sentences will be chopped by the echo canceller.
C. Consonants 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.
Answer: D

4. Your company has recently installed a Cisco Unified CallManager cluster and a Cisco Unity voice mail platform. You have received complaints from users that the red MWI light never comes on, even when there are new voice-mail messages in the voice mailboxes. Which two steps must be taken to resolve this issue? (Choose two.)
A. Verify, using the Port Usage tool, that the ports dedicated to MWI on/off are not over-utilized. Add another dedicated port if the current port is over-utilized.
B. Verify that the MWI on/off numbers are unique within the Cisco Unified CallManager cluster dial plan. If they are not, change the MWI on/off numbers in the Cisco Unified CallManager cluster so they are unique and configure the Cisco Unity server so they match.
C. Ensure that the number of ports licensed for the Cisco Unity server is greater than or equal to the number of configured ports.
D. Verify that the calls are being sent to the correct ports on the Cisco Unity server. If they are being sent to the incorrect ones by the Cisco Unified CallManager cluster, correct the values in the cluster.
E. Verify that the same numbers are being used for MWI on/off in both the Cisco Unified CallManager cluster and Cisco Unity server. If they are different, change the Cisco Unity server to match the Cisco Unified CallManager cluster.
Answer: BE

5. Which Cisco Unity troubleshooting tool would be used to diagnose problems with skinny and MWI messages?
A. Cisco Unity Performance Information and Diagnostics
B. Unity Diagnostic Tool
C. Integration Monitor
D. SysCheck
Answer: B

6. The following is a partial configuration of an access layer switch:
mls qos map cos-dscp 0 8 12 16 28 32 40 48
mls qos
!
Voice bearer traffic will be set to use which per-hop behavior?
A. EF
B. CS4
C. AF32
D. AF12
E. BE
Answer: B




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