642-427 試験問題を無料オンラインアクセス

You have a Cisco Unified Communications Manager cluster with four servers that are integrated with two Cisco Unity Connection servers and two Cisco Unified Contact Center Express servers. Some of the Cisco IP Phones are not implementing configuration changes that you assign to them.
Which troubleshooting approach can you implement to have the Cisco IP Phones accept all configuration changes?

• A.Synchronize the databases in Cisco Unity Connection and Cisco Unified Contact Center Express.
• B.Synchronize the database between the Publisher and the Subscriber of Cisco Unified Communications Manager.
• C.Synchronize the database between Cisco Unity Connection and of Cisco Unified Communications Manager.
• D.Synchronize the database between Cisco Unified Contact Center Express and Cisco Unified Communications Manager.

Refer to the exhibit.

A second Cisco Unified Communications Manager server of 10.10.10.101 was added along with the existing Cisco Unified CM server of 10.10.10.100. When Cisco Unified CM 10.10.10.100 is unavailable, the branch gateway fails to register.
Which configuration change is needed to register the gateway to either Cisco Unified CM server?

• A.Add the command ccm-manager redundant-host 10.10.10.101.
• B.Add a voice dial peer to 10.10.10.101.
• C.Increase the amount of bandwidth allocated in the low latency queuing for MGCP signaling traffic.
• D.Add the command MGCP.
• E.Remove the gatekeeper command because MGCP conflicts with H.323 on the voice gateway.

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

• A.RTCP provides out-of-band control information for an RTP flow
• B.RTCP provides encryption, message authentication and integrity, and anti-replay service for voice streams.
• C.RTCP uses even-numbered UDP ports in the range 16,384??0?10?0?43??1?0?1C32,767 to transport voice payloads
• 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.

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

Which log file contains call-processing information from services such as Cisco Unified CallManager and Cisco Unified CallManager CTI Manager?

• A.CDROnDemand
• B.CTI trace
• C.SDL trace
• D.SDI trace