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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 |
| Exam Format: | Multiple-choice, Multiple-answer, Simulation-based |
| Exam Duration: | 90 minutes |
| Real Exam Qty: | 55-65 |
| Available Languages: | English, Japanese |
| Certificate Validity Period: | 3 years |
| Related Certifications: | CCNP Voice |
| Exam Price: | USD 300 |
| Sample Questions: | Cisco 642-427 Sample Questions |
| 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 Unified Presence and Mobility | - Presence service troubleshooting - Mobility and extension mobility issues |
| Cisco Unity and Voice Applications | - Messaging service troubleshooting - Voicemail integration issues |
| Cisco Unified Communications Manager | - Call processing issues - Device registration problems - Dial plan troubleshooting |
| Voice Gateways and Trunks | - PSTN connectivity issues - H.323 gateway troubleshooting - MGCP gateway troubleshooting - SIP trunk troubleshooting |
| IP Phones and Endpoints | - Firmware and endpoint connectivity issues - Phone registration and provisioning |
| Media Resources | - Transcoders and conference bridges - Media Termination Points - Music on Hold and annunciators |
| Quality of Service and Voice Quality | - Latency, jitter, and packet loss analysis - QoS verification and troubleshooting - Voice quality diagnostics |
| Troubleshooting Methodology | - Log and trace analysis - Diagnostic tools and techniques - Structured troubleshooting process |
Cisco Troubleshooting Cisco Unified Communications v8.0 (TVOICE v8.0) Sample Questions:
1. The CLI utils dbreplication reset all was run on a Cisco Unified Communications Manager. However, replication failed to restart. Which course of action should be taken to resolve this issue?
A) Issue the CLI command utils dbreplication clusterreset
B) Issue the CLI command utils dbreplication clusterreset all
C) Restart the replication from the Cisco Unified Communications Manager RTMT tool.
D) Issue the CLI command utils dbreplication reset
E) Issue the CLI command utils dbreplication runtimestate
2. Which command should you use to resolve a jerky speed issue?
A) comfort-echo
B) echo-cancel coverage
C) show voice port
D) playout-delay
E) comfort-noise
F) echo-cancel enable
3. Please choose two methods of LRQ forwarding from the following items. (Select two.)
A) LRQ blast
B) LRQ static
C) LRQ init
D) LRQ sequential
4. Your company has a centralized IP Telephony system and branch offices in eight major cities. The manager of your company help desk recently published local access numbers for external customers to reduce the costs associated with your company's toll-free 800 service. However, when customers call the new local numbers they hear a reorder tone instead of your centralized IVR.
What is the best solution to this issue?
A) Increase the number of ports in the centralized IVR.
B) Deploy transcoders at the central location.
C) Deploy transcoders at each remote location.
D) Deploy Cisco Unified IP IVRs at each remote location.
5. What happens if CDP is not enabled on a switch port to which an IP phone is connected?
A) The phone cannot get its VLAN ID assignments.
B) The phone is unable to acquire an IP address.
C) The phone cannot learn the address of the TFTP server.
D) The switch will put the port into the errDisable state until CDP is enabled.
Solutions:
| Question # 1 Answer: A | Question # 2 Answer: D | Question # 3 Answer: A,D | Question # 4 Answer: B | Question # 5 Answer: A |
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