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Cisco 642-427 Exam Syllabus Topics:
| Section | Objectives |
|---|---|
| Topic 1: Cisco Unity and Voice Applications | - Messaging service troubleshooting - Voicemail integration issues |
| Topic 2: Troubleshooting Methodology | - Log and trace analysis - Diagnostic tools and techniques - Structured troubleshooting process |
| Topic 3: Voice Gateways and Trunks | - SIP trunk troubleshooting - H.323 gateway troubleshooting - MGCP gateway troubleshooting - PSTN connectivity issues |
| Topic 4: Media Resources | - Music on Hold and annunciators - Transcoders and conference bridges - Media Termination Points |
| Topic 5: Quality of Service and Voice Quality | - QoS verification and troubleshooting - Voice quality diagnostics - Latency, jitter, and packet loss analysis |
| Topic 6: Cisco Unified Communications Manager | - Dial plan troubleshooting - Call processing issues - Device registration problems |
| Topic 7: IP Phones and Endpoints | - Firmware and endpoint connectivity issues - Phone registration and provisioning |
| Topic 8: Cisco Unified Presence and Mobility | - Mobility and extension mobility issues - Presence service troubleshooting |
Cisco Troubleshooting Cisco Unified Communications v8.0 (TVOICE v8.0) Sample Questions:
1. Please choose the function of an H.323 gateway from the following items.
A) Converts an alias address to an IP address
B) Responds to bandwidth requests and modifications
C) Transmits and receives G.711 PCM-encoded voice
D) Performs translation between audio, video, and data formats
2. Refer to the exhibits.
MOH has been configured to run from flash at the BR1 site. The HQ phones and MOH server are placed in the Default region through the Default device pool. The BR1 phones are placed in the BR1 region through the BR1 device pool. The region configuration between Default and BR1 only permits G.729 codec.
When an IP phone user at the HQ site places a BR1 caller on hold, the BR1 caller hears tone on hold. Which of the following can cause this issue?
A) Multicast routing is not enabled on the BR1 router.
B) The MOH server is unable to stream MOH using G.711 codec because of the regions configuration.
C) The command ip pim separate-dense-mode is missing from interface VLAN 120 at the SRST router in BR1.
D) The Max Hops is too small in the MOH configuration
E) The command route 10.1.120.1 must be added to the multicast moh 239.1.1.1 port 16384 command at the SRST router in BR1.
3. Which tool allows the administrator to analyze call routing in Cisco Unified Communications Manager without physically placing a call?
A) Cisco Unified Communications Manager Serviceability tools
B) Cisco Unified Communications Manager RTMT trace output.
C) Cisco IOS Gateway debug commands.
D) base configuration information for this user that specifies Class of Restriction, Partition and Calling Search Space information
E) Cisco Unified Communications Manager Dialed Number Analyzer.
F) Cisco Unified Communications Manager OS Administration.
4. In a SIP direct call setup, which message will be sent by the originating UAC to the UAS of the recipient?
A) ACK
B) RINGING
C) OK
D) INVITE
5. Which troubleshooting tool is the most effective to display detailed real-time output of call setup on phones that are registered to a Cisco Unified Communications Manager cluster?
A) Integrate an MGCP gateway with a Cisco Unified Communications Manager cluster to redirect trace files to the MGCP gateway.
B) Implement RTMT to create trace files.
C) Implement DNA to create trace files.
D) Create trace files from Cisco Unified Reporting.
Solutions:
| Question # 1 Answer: D | Question # 2 Answer: C | Question # 3 Answer: E | Question # 4 Answer: D | Question # 5 Answer: B |
