Cisco 642-427 Exam : Troubleshooting Cisco Unified Communications v8.0 (TVOICE v8.0)

  • Exam Code: 642-427
  • Exam Name: Troubleshooting Cisco Unified Communications v8.0 (TVOICE v8.0)
  • Updated: Sep 03, 2025
  • Q & A: 301 Questions and Answers

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

1. For a Media Gateway Control Protocol (MGCP) gateway to register, what is the minimum version of Cisco CallManager that you should have?

A) 3.0(6)a
B) 3.0(1)a
C) 3.0(4)a
D) 3.0(3)a
E) 3.0(5)a
F) 3.0(2)a


2. Which two options are used by Cisco Service Advertisement Framework Forwarder to communicate with IP networks? (Choose two.)

A) static configuration
B) dynamic discovery
C) Cisco SAF client
D) Cisco Discovery Protocol Neighbors Detail
E) static NAT
F) Cisco TCP client


3. While you troubleshoot an issue with audio quality, the symptoms stop.
Which troubleshooting step is next?

A) Finalize the definition of the problem.
B) Finalize the observation of the results.
C) Continue to gather all the facts about the situation.
D) Document the facts.


4. Refer to the exhibit.

When Alice, at extension 2001, places a call to Bob, at extension 3001, Alice hears her own voice reflected.
Which type of echo is this classified as?

A) listener echo
B) talker echo
C) front-end circuit echo
D) tail circuit echo


5. Users can log in to Cisco Extension Mobility, but they cannot log out.
Which action solves this problem?

A) Subscribe the device profile to Cisco Unified Communications Manager Extension Mobility.
B) Change or remove the Calling Search Space on the phones that have trouble logging out of Cisco Unified Communications Manager Extension Mobility.
C) Apply the Cisco Unified Communications Manager Extension Mobility service to the IP phones that have trouble logging out.
D) Create a new Cisco Unified Communications Manager Extension Mobility service.


Solutions:

Question # 1
Answer: E
Question # 2
Answer: B,C
Question # 3
Answer: C
Question # 4
Answer: B
Question # 5
Answer: A

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