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Cisco 642-432 Exam Syllabus Topics:
| Section | Objectives |
|---|---|
| IP Phone Deployment and Features | - Endpoint registration and configuration
|
| Cisco Unified Communications Architecture | - Call processing design
|
| Voice Gateway and Protocol Integration | - PSTN integration
|
| Quality of Service (QoS) for Voice | - Voice traffic prioritization
|
| Call Control and Survivability | - SRST (Survivable Remote Site Telephony)
|
Cisco Voice Over IP Sample Questions:
A particular set of H.323 endpoints cannot resolve the IP address of destination endpoints. What is the H.323 approved method to fix this problem?
- A. Hard code all IP addresses.
- B. Choose another signaling protocol.
- C. Introduce a gatekeeper on the segment.
- D. Build route tables in gateways on the segment.
Correct Answer: C 🗳️
One voice packet is lost between Phone A and Phone B.
What will be the result to the listener?
- A. The listener will hear the audio out of order when the lost packet is retransmitted.
- B. The listener will hear the audio normally. Packet loss concealment will make the loss inaudible.
- C. The call is terminated.
- D. The listener will experience a gap in the received audio stream.
Correct Answer: B 🗳️
In North America, which E&M signaling type is used most often for geographically separated equipment?
- A. Type III
- B. Type I
- C. Type II
- D. Type IV
- E. Type V
Correct Answer: C 🗳️
How do a-law and mu-law handle issues with signal-to-noise ratios related to the measure of amplitude?
- A. Increase code points at higher frequencies.
- B. Increase code points at lower amplitudes.
- C. Use smaller step functions at higher frequencies.
- D. Use smaller step functions at lower amplitudes.
Correct Answer: D 🗳️
