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Cisco 642-427 Exam Syllabus Topics:
| Section | Objectives |
|---|---|
| Topic 1: Voice Gateways and Trunks | - SIP trunk troubleshooting - PSTN connectivity issues - H.323 gateway troubleshooting - MGCP gateway troubleshooting |
| Topic 2: Cisco Unified Presence and Mobility | - Mobility and extension mobility issues - Presence service troubleshooting |
| Topic 3: Cisco Unity and Voice Applications | - Voicemail integration issues - Messaging service troubleshooting |
| Topic 4: Quality of Service and Voice Quality | - Latency, jitter, and packet loss analysis - QoS verification and troubleshooting - Voice quality diagnostics |
| Topic 5: IP Phones and Endpoints | - Firmware and endpoint connectivity issues - Phone registration and provisioning |
| Topic 6: Cisco Unified Communications Manager | - Device registration problems - Dial plan troubleshooting - Call processing issues |
| Topic 7: Troubleshooting Methodology | - Log and trace analysis - Diagnostic tools and techniques - Structured troubleshooting process |
| Topic 8: Media Resources | - Music on Hold and annunciators - Media Termination Points - Transcoders and conference bridges |
Cisco Troubleshooting Cisco Unified Communications v8.0 (TVOICE v8.0) Sample Questions:
Which method can be used to correct database replication issues in a cluster running Cisco Unified CallManager 5.0?
Select the best response.
- A. Run the Cisco Unified CallManager BARS utility to restore the database to the subscriber.
- B. Use the Informix database utility to recreate the database subscription.
- C. Use the SQL Server Enterprise Manager application to recreate the database subscription.
- D. Execute the dblhelper utility on the publisher.
- E. Enter the utils dbreplication repair command at the command-line prompt.
Correct Answer: E 🗳️
Which of the following best describe implementation challenges that are associated with variable-length numbering plans?
- A. the mapping between IP addresses and extension numbers
- B. the number of trunks that need to be assigned
- C. the degree in which the dial plan varies.
- D. the identification of the number of digits that need to be dialed before the call is routed
- E. the variable number of extensions that need to be implemented
Correct Answer: C 🗳️
Explanation: Only visible for DumpsQuestion members. You can sign-up / login (it's free).
The following statements describe the icons' functions displayed in the exhibit.
The GK icon can be clicked to view the output of the show gatekeeper endpoint command.
The CallManager cluster can be clicked to see the trunk configuration screens.
The X of each popup can be clicked to return to the item.
In order to support three local zones West, East and EMEA, the 10.1.110.1 router is configured with a gatekeeper. After issuing the show gatekeeper endpoints command, you find that the West zone device is lost. Please choose the proper measure that should be taken to the configuration in the CallManager for it to register with the gatekeeper of the zone West.
- A. Restart the callmanger so it can register with the gatekeeper
- B. Change the Device Name to be the IP address of the gatekeeper in the CallManager Trunk Configuration page
- C. Configure a zone name on the CallManager trunk
- D. Set the Terminal Type to terminal in the Gatekeeper Information field of the Trunk Configuration
Correct Answer: C 🗳️
Which two statements indicate something that can cause an IP phone to fail roaming when device mobility has been configured? (Choose two)
- A. No device mobility groups have been configured.
- B. No physical locations have been configured and assigned to the device pools.
- C. No device mobility-related information settings were configured under the device pools.
- D. No locations have been configured and assigned to the device pools.
- E. Device Mobility Mode is set to Off in the Cisco Unified Communications Manager service parameters while the device mobility configuration on the phone is set to default.
Correct Answer: B,E 🗳️
Refer to the exhibit. A user at BR1 is on a call to the PSTN through the PRI interface on the local
H.323 gateway. The IP WAN has just failed and the call has been dropped.
What is causing the call to be dropped?
- A. The no h225 timeout keepalive command has not been configured on the gateway.
- B. The H.323 gateway has lost the D channel on the PRI.
- C. The IP phone hasn't registered with SRST.
- D. SRST hasn't been configured on the BR1 gateway.
Correct Answer: A 🗳️
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