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Cisco 642-427 Exam Syllabus Topics:
| Section | Weight | Objectives |
|---|---|---|
| Integrated Solution Troubleshooting | 10% | - Presence and IM service troubleshooting - Unity Connection integration issues |
| Call Setup and Dial Plan Troubleshooting | 25% | - Globalized call routing and number transformation - Dial plan, route patterns, partitions, CSS, translation rules - Intrasite, intersite, and off-net call failures |
| CUCM and Registration Troubleshooting | 25% | - Gateway and trunk registration (SIP, H.323, MGCP) - CUCM service availability and database replication - Endpoint and IP phone registration issues |
| Troubleshooting Methodology and Tools | 20% | - Monitoring and diagnostic tools: RTMT, Serviceability, traces, logs, debugs - Systematic troubleshooting approach |
| Advanced Features and Applications | 20% | - Media resources, voice quality, and QoS issues - Extension Mobility Cross Cluster - Call Control Discovery (CCD) and SAF |
Cisco Troubleshooting Cisco Unified Communications v8.0 (TVOICE v8.0) Sample Questions:
Refer to the exhibit. What is the TCP handle of this device? Select the best response.
- A. 87
- B. 1,60,87
- C. 1.100.7.173
- D. SEP0002FD3BAB01
- E. 10.1.120.149
Correct Answer: A 🗳️
Explanation: Only visible for TestValid members. You can sign-up / login (it's free).
Which two issues can cause a Cisco Unified Communications Manager to fail to register with its Cisco SAF Forwarder? (Choose two.)
- A. CCD advertising service was not activated.
- B. CCD requesting service was not activated.
- C. An H.323 SAF trunk was configured instead of a SIP SAF trunk.
- D. Incorrect user credentials were used on the SAF Forwarder.
- E. No directory number patterns were configured on the Cisco Unified Communications Manager.
Correct Answer: B,D 🗳️
Look at the following exhibit carefully.
You can click on the GK icon to view the output of the show gatekeeper endpoint command and click on each voice gateway to view the interface configuration. X of each popup can be clicked to back to the item.
As a network technician, you are recently responsible for configuring a gatekeeper with three local zones called East, West and EMEA. You have accomplished this task. In the East and EMEA zones, CallManager and the gateways are all registered in the West Zone, however, each of them should be registered in their own zone. In order to fix this issue, which measure should you take?
- A. The gatekeeper can only support one zone and all registering endpoints are being placed correctly in the first configured zone.
- B. The IP address in the gateway command h323-gateway voip ID needs to be changed to that of the individual gateways in both gateways.
- C. The zone name in the gateway command h323-gateway voip ID needs to be changed to the correct zone in both gateways.
- D. The gatekeeper needs to be stopped and restarted for the changes to take effect.
Correct Answer: C 🗳️
How does LLQ ensure that voice traffic is always expedited?
- A. LLQ adds a strict priority class to CBWQF. The class allows delay-sensitive data such as voice to be dequeued and sent first.
- B. The LLQ strict priority queue allows delay-sensitive data such as voice to be dequeued and sent first (before packets in order queue are dequeued), giving delay sensitive data preferential treatment over other traffic.
- C. LLQ uses CBWFQ to prioritize voice traffic and dequeue the voice packets so that they can be handled first.
- D. The strict priority queue has a higher weight than the queues in CBWFQ. This weight allows the delay sensitive data such as voice to be dequeued and sent first.
Correct Answer: B 🗳️
Explanation: Only visible for TestValid members. You can sign-up / login (it's free).
Which four of the following options are Cisco-supported IP telephony deployment models?
- A. Clustering over the IP WAN
- B. Transcoding
- C. Single site
- D. Multisite with distributed call processing
- E. Multisite with centralized call processing
Correct Answer: A,C,D,E 🗳️
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