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Cisco Troubleshooting Cisco Unified Communications v8.0 (TVOICE v8.0) Sample Questions:

1. You have two Cisco Unified CallManager clusters each using endpoint authentication. You have moved a small group of users from Cluster 1 to Cluster 2 and now their phones are failing to register with Cluster 2. Each phone displays the error message "failure to authenticate on the CTL file".
Which step should be taken to resolve this issue?

A) Restart the Cisco CTL Provider and the Cisco Certificate Authority Proxy Function.
B) Press the Settings button on each IP phone, select the Security Configuration menu, and reset the trust list.
C) Perform a factory reset on each IP phone so the correct CTL file can be downloaded.
D) Reset each IP phone so the correct CTL file can be downloaded.

2. Refer to the exhibit. You have received a trouble ticket stating that users cannot place calls to the PSTN. During testing you discover the gateway is not switching to the secondary call agent when the primary call agent is unreachable.
What needs to be done to allow the MGCP gateway to use a different call agent if the primary fails?

A) A Cisco Unified CallManager group that includes the secondary call agent needs to be assigned to the gateway.
B) The gateway needs to be defined as a non-gatekeeper-controlled intercluster trunk with the secondary Cisco Unified CallManager defined.
C) The ccm-manager redundant-host command needs to be added to the gateway.
D) The ccm-manager fallback-mgcp command needs to be added to the gateway.

3. As a network technician, you should be familiar with RTCP. Which of the following statements best describes a function of RTCP?

A) RTCP uses even-numbered UDP ports in the range 16,384??0?10?0?43??1?0?1C32,767 to transport voice payloads
B) RTCP provides encryption, message authentication and integrity, and anti-replay service for voice streams.
C) RTCP provides out-of-band control information for an RTP flow
D) RTCP caches an RTP packet-Layer 3 and Layer 4 headers in the routers at each end of a link, resulting in lower bandwidth demand for subsequent RTP packets.

4. Which QoS methodology combines strict priority queuing with class-based weighted fair queuing?

A) LLQ
B) IP Frame Relay RTP Priority
C) IP RTP Priority
D) RSVP
E) Multilink

5. 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 hardware conferencing on the branch router and integrate with Cisco Unified CM.
B) Enable software conferencing in headquarters internal to Cisco Unified CM.
C) Enable LLQ on the branch router and the headquarters router.
D) Enable hardware conferencing on the headquarters router and integrate with Cisco Unified CM.

Solutions: