Cisco 642-432 Q&A - in .pdf
- Exam Code: 642-432
- Exam Name: Cisco Voice Over IP
- Updated: Sep 11, 2026
- Q & A: 72 Questions and Answers
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- Exam Code: 642-432
- Exam Name: Cisco Voice Over IP
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- Updated: Sep 11, 2026
- Q & A: 72 Questions and Answers
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Cisco 642-432 Q&A - Testing Engine
- Exam Code: 642-432
- Exam Name: Cisco Voice Over IP
- Updated: Sep 11, 2026
- Q & A: 72 Questions and Answers
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Cisco 642-432 Exam Syllabus Topics:
| Section | Objectives |
|---|---|
| Voice Gateway and Protocol Integration | - PSTN integration
|
| Call Control and Survivability | - Redundancy and high availability
|
| IP Phone Deployment and Features | - Endpoint registration and configuration
|
| Cisco Unified Communications Architecture | - CUCM (Cisco Unified Communications Manager) fundamentals
|
| Quality of Service (QoS) for Voice | - Voice traffic prioritization
|
Cisco Voice Over IP Sample Questions:
Which type of signaling is DTMF?
- A. informational
- B. address
- C. route
- D. supervisory
Correct Answer: B 🗳️
In an effort to consume less bandwidth across the WAN, the decision was made at Acme Chemical Company to change the voice packet size. They changed from two voice frames per packet to one voice frame per packet. What effect did this have on Acme's voice traffic?
- A. Per call bandwidth consumption decreased and end-to-end delay decreased.
- B. Per call bandwidth consumption decreased and end-to-end delay increased.
- C. Per call bandwidth consumption increased and end-to-end delay also increased.
- D. There was no effect on voice traffic.
- E. Per call bandwidth consumption increased and end-to-end delay decreased.
Correct Answer: E 🗳️
Which is the best way to achieve a scalable dial plan?
- A. single number prefixing
- B. variable number of extension digits
- C. group numbers for a particular area
- D. hunt groups
Correct Answer: C 🗳️
You are working with a potential customer that would like to integrate its existing PBX telephone system into its IP network. The accompanying figure shows that the customer has two offices that need to be connected to the IP network so that the customer can exchange telephone calls without using the PSTN. Both PBXs use an in-band signaling type.
Which signaling type will allow you to support your customer?
- A. CCS
- B. T-CCS
- C. FXO
- D. E&M
- E. QSIG
- F. CAS
Correct Answer: F 🗳️
Which option is true concerning the MGCP call agent?
- A. provides only call signaling and call setup
- B. acts only as a recorder of call details
- C. manages all aspects of the call and voice stream
- D. monitors the quality of each call after setup
Correct Answer: A 🗳️
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