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 Overview:
| Certification Vendor: | Cisco |
|---|---|
| Exam Name: | Troubleshooting Cisco Unified Communications v8.0 (TVOICE v8.0) |
| Exam Number: | 642-427 |
| Certificate Validity Period: | 3 years |
| Available Languages: | Japanese, English |
| Related Certifications: | CCNP Voice |
| Exam Format: | Simulation-based, Multiple-answer, Multiple-choice |
| Exam Price: | USD 300 |
| Real Exam Qty: | 55-65 |
| Exam Duration: | 90 minutes |
| Sample Questions: | DOWNLOAD DEMO |
| Exam Way: | Proctored exam delivered at Pearson VUE testing centers. |
| Pre Condition: | Valid CCNA Voice or any active CCIE certification was required for the CCNP Voice certification path. |
| Official Syllabus URL: | https://learningnetwork.cisco.com/s/exam-topics |
Cisco 642-427 Exam Syllabus Topics:
| Section | Objectives |
|---|---|
| Cisco Unity and Voice Applications | - Messaging service troubleshooting - Voicemail integration issues |
| Cisco Unified Presence and Mobility | - Presence service troubleshooting - Mobility and extension mobility issues |
| Voice Gateways and Trunks | - PSTN connectivity issues - MGCP gateway troubleshooting - SIP trunk troubleshooting - H.323 gateway troubleshooting |
| Quality of Service and Voice Quality | - Latency, jitter, and packet loss analysis - QoS verification and troubleshooting - Voice quality diagnostics |
| IP Phones and Endpoints | - Phone registration and provisioning - Firmware and endpoint connectivity issues |
| Media Resources | - Media Termination Points - Transcoders and conference bridges - Music on Hold and annunciators |
| Troubleshooting Methodology | - Structured troubleshooting process - Log and trace analysis - Diagnostic tools and techniques |
| Cisco Unified Communications Manager | - Device registration problems - Call processing issues - Dial plan troubleshooting |
642-427 Exam FAQ for Serious Candidates
Yes — the free Cisco Troubleshooting Cisco Unified Communications v8.0 (TVOICE v8.0) demo lets you evaluate question quality and analyses before paying. Purchases include 365 days of free updates, renewable afterward at 50% off.
The Cisco Troubleshooting Cisco Unified Communications v8.0 (TVOICE v8.0) blueprint spans 8 domains — including Cisco Unified Presence and Mobility, Cisco Unified Communications Manager, IP Phones and Endpoints. Read the weightings as priorities: the points concentrate where the percentages do. The full outline above covers every subtopic.
The Cisco Troubleshooting Cisco Unified Communications v8.0 (TVOICE v8.0) is Cisco's exam for the CCNP Voice certification, a Professional-level credential. It's a hot topic because certified candidates stand out in job competition — the credential opens possibilities that uncertified resumes can't. Related credentials include CCNP Voice.
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90 minutes for 55-65 questions. That's a pace you can train: run timed simulations in the ActualTestsIT engine until answering at speed feels normal, and use the analyses to make every wrong answer count.
Valid CCNA Voice or any active CCIE certification was required for the CCNP Voice certification path. Vendors revise eligibility rules over time, so confirm the current requirements on the official page (official 642-427 exam page) before you register.
Cisco Troubleshooting Cisco Unified Communications v8.0 (TVOICE v8.0) Sample Questions:
As administrator replaced a faulty IP phone with a new one by replacing the hardware and editing the phone MAC address in the device configuration in Cisco Unified Communications Manager. When the administrator tries to the save the configuration, the old MAC address still appears under the device configuration. What is the most likely cause of this issue?
- A. The administrator must edit the new phone MAC address under the Phone Enterprise settings page.
- B. The MAC address for the new IP phone must be configured in the publisher instead of the subscriber.
- C. The subscriber the phone is registered to may have database replication issues.
- D. The administrator does not have full access privileges in Cisco Unified Communications Manager.
- E. The Cisco Unified Communications Manager needs to be enabled for autoregistration.
Correct Answer: C 🗳️
You have just obtained a list of the following options:
-All Patterns -Unassigned DN -Call Park -Conference -Directory Number -Translation Pattern -Call Pickup Group -Route Pattern -Message Waiting -Voice Mail -Attendant Console
What have you selected in order to produce this list?
- A. Dialed Number Analyzer
- B. Route Plan > External Route Plan Wizard
- C. Route Plan > Route Plan Report
- D. Control Center > Feature Services
Correct Answer: C 🗳️
Explanation: Only visible for ActualTestsIT members. You can sign-up / login (it's free).
Refer to the Exhibit.
The Exhibit shows the output of an unsuccessful RSVP call setup that uses G.711 codec. Which configuration on serial 0/1/0.121 would resolve that issue?
- A. ip rsvp bandwidth 80 16
- B. ip rsvp bandwidth 40 24
- C. ip rsvp bandwidth 96 80
- D. ip rsvp bandwidth 40 40
- E. ip rsvp bandwidth 96 96
Correct Answer: E 🗳️
Which two methods can be used to correct database replication issues in a cluster running Cisco Unified CallManager 4.1? (Choose two.)
- A. Use the Informix database utility to recreate the database subscription.
- B. Enter the utils dbreplication repair command at the command-line prompt.
- C. Execute the dblhelper utility on the publisher.
- D. Run the Cisco Unified CallManager BARS utility to restore the database to the subscriber.
- E. Use the SQL Server Enterprise Manager application to recreate the database subscription.
Correct Answer: C,E 🗳️
Nine users in a branch office frequently have audio conferences with each other and their clients who call in from the PSTN. They frequently report poor audio quality during conference calls. A 500 kb/s WAN link connects the branch office and headquarters, which hosts the Cisco Unified Communications Manager cluster.
Which troubleshooting solution most directly improves their audio quality during conference calls?
- A. Enable LLQ on the branch router and the headquarters router.
- B. Enable software conferencing in headquarters internal to Cisco Unified CM.
- C. Enable hardware conferencing on the headquarters router and integrate with Cisco Unified CM.
- D. Enable hardware conferencing on the branch router and integrate with Cisco Unified CM.
Correct Answer: D 🗳️
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