Exam Name: Troubleshooting Cisco Unified Communications v8.0 (TVOICE v8.0)
Certification Provider: Cisco
Corresponding Certification: CCNP Voice
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Cisco 642-427 Exam Syllabus Topics:
| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Integrated Solution Troubleshooting | 10% | - Presence and IM service troubleshooting - Unity Connection integration issues |
| Topic 2: Troubleshooting Methodology and Tools | 20% | - Systematic troubleshooting approach - Monitoring and diagnostic tools: RTMT, Serviceability, traces, logs, debugs |
| Topic 3: Advanced Features and Applications | 20% | - Extension Mobility Cross Cluster - Media resources, voice quality, and QoS issues - Call Control Discovery (CCD) and SAF |
| Topic 4: CUCM and Registration Troubleshooting | 25% | - Endpoint and IP phone registration issues - CUCM service availability and database replication - Gateway and trunk registration (SIP, H.323, MGCP) |
| Topic 5: Call Setup and Dial Plan Troubleshooting | 25% | - Dial plan, route patterns, partitions, CSS, translation rules - Intrasite, intersite, and off-net call failures - Globalized call routing and number transformation |
Cisco Troubleshooting Cisco Unified Communications v8.0 (TVOICE v8.0) Sample Questions:
When users in headquarters call branch office users over the WAN link, branch users report poor audio quality. Headquarters users consistently experience acceptable audio quality.
Which troubleshooting approach most directly improves the audio quality of the branch users?
- A. Make the branch router configuration for LLQ match the headquarters router.
- B. Make the headquarters router configuration for LLQ match the branch router.
- C. Make the headquarters router configuration for CBWFQ match the branch router.
- D. Make the branch router configuration for CBWFQ match the headquarters router.
Correct Answer: B 🗳️
Under normal conditions, what is the Cisco default attenuation level on a gateway?
- A. -6
- B. 0
- C. 3
- D. -15
Correct Answer: B 🗳️
Refer to the exhibit.
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. Apply QoS on voice-port 0/0/0:23 by adding the command service-policy output voice.
- B. Remove the command random-detect from the branch gateway configuration.
- C. Increase the quantity on the priority command.
- D. Increase the quantity on the bandwidth command.
Correct Answer: C 🗳️
Where does an IP phone obtain the extension number and speed-dial settings from?
- A. the device and line configuration in Cisco Unified Communications Manager, during the registration process
- B. the default device profile that is configured in Cisco Unified Communications, Manager
- C. the registration file that the phone receives from the Cisco Unified Communications Manager
- D. the settings that are configured on the physical phone
Correct Answer: A 🗳️
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