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Cisco 642-427 Exam Syllabus Topics:

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

1. You need to collect debug information in a production environment on urgent basis to troubleshoot a problem. Which two commands are recommended by Cisco that you should run? (Choose two.)

A) undebug all
B) show logging info
C) no logging console
D) show debug
E) logging buffered
F) no debug all

2. Several Cisco 7961 IP Phones were initially registered to a Cisco Unified Communications Manager cluster that is enabled with SRTP and TLS. When the same phones are moved to a new Cisco Unified CM cluster, the phones are not registering to the new Cisco Unified CM cluster.
Which action can be taken to solve this problem?

A) Manually enter the IP address, subnet mask, and default gateway into the Cisco 7961 phones.
B) Copy the digital certificates from the original Cisco Unified CM cluster to the new cluster.
C) On the phone, press Settings. Press **#, press the more softkey, press Erase, and Exit.
D) Update the DHCP server on the new Cisco Unified CM cluster to include the certificate authority.

3. A network sniffer is implemented to troubleshoot call setup failures. Initially, the sniffer is able to see only traffic sent to and from the computer that is running the sniffer.
Which two solutions allow the sniffer to see H.323 call setup traffic to and from different devices other than the computer that is running the sniffer. (Choose two.)

A) Configure the SPAN to have an extra stream of the H.323 call setup packets sent to a different switch port to the computer that is running the sniffer.
B) Configure Cisco Unified Communications Manager to redirect the H.323 call setup packets to the computer that is running the sniffer.
C) Configure the ERSPAN to have an extra stream of the H.323 call setup packets sent over multiple hops to the computer that is running the sniffer.
D) Configure the H.323 gateway to have an extra stream of the H.323 call setup packets sent over multiple hops to the computer that is running the sniffer.

4. Refer to the exhibit.

Phones of branch users are not registering to the headquarters Cisco Unified Communications Manager of 10.10.10.100.
Which action fixes the registration of the branch phones?

A) Add the command telephony-service and configure Cisco Unified Communications Manager Express to the existing configuration.
B) Change the default-router and network dhcp command setting.
C) Remove the option 150 command.
D) Add the command ip dhcp excluded-address 10.1.1.1 10.1.1.100.

5. You just installed a second Cisco Unified Communications Manager cluster at a remote site that is accessible over your WAN link.
Which two actions allow the route patterns in each cluster to route calls to the other cluster? (Choose two.)

A) Create SIP trunks from each cluster to the other cluster.
B) Create ICTs from each cluster to the other cluster.
C) Create SIP trunks to a centrally located gatekeeper.
D) A Cisco Unified Communications Manager route group and a route list are mandatory for inter-cluster dialing.

Solutions: