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Cisco 642-432 Exam Syllabus Topics:
| Section | Weight | Objectives |
|---|---|---|
| Voice Quality and QoS | 5% | - Delay, jitter, packet loss - QoS mechanisms for VoIP |
| Implementing VoIP Gateways | 25% | - Gateway configuration and troubleshooting - H.323 and SIP gateway concepts - MGCP gateway operation |
| Configuring Voice Ports | 20% | - Signaling types: Loop Start, Ground Start, E&M - Voice port configuration and verification - Analog and digital voice ports |
| Dial Plan Implementation | 20% | - Path selection and call routing - Dial peers and call legs - Digit manipulation and translation rules |
| Introduction to Voice over IP | 15% | - Voice quality and QoS fundamentals - Characteristics of VoIP networks - Voice encoding and compression (G.711, G.729, etc.) |
| Gatekeepers and Advanced Features | 15% | - Connecting to service providers/ITSP - H.323 gatekeeper functions - Call admission control |
Cisco Voice Over IP Sample Questions:
Which statement is true about only out-of-band signaling?
- A. All signaling is directly associated with its corresponding voice frame.
- B. All voice packets carry their own signaling.
- C. Signaling bits are sent in a special order in a dedicated signaling frame.
- D. A signaling bit is robbed from each frame.
Correct Answer: C 🗳️
Which process changes an internal extension into a fully qualified external PSTN number before matching to a dial peer?
- A. forward digits
- B. digit masking
- C. number expansion
- D. prefix extension
Correct Answer: C 🗳️
Examine the output.
ccm-manager mgcp ! mgcp 5036 ! voice-port 1/0/0 ! voice-port 1/0/1 ! dial-peer voice 1 pots application MGCPAPP port 1/0/0 !
dial-peer voice 2 pots application MGCPAPP port 1/0/1 !
Your customer has sent you their MGCP gateway configuration. They are unable to get the gateway to communicate with the call agent. What command needs to be inserted to resolve the problem?
- A. ccm-manager mgcp 172.16.1.1
- B. mgcp call-agent 172.16.1.1
- C. mgcp 5036 172.16.1.1
- D. application MGCPAPP 172.16.1.1
Correct Answer: B 🗳️
What is the E.164 numbering plan?
- A. the ITU worldwide number plan
- B. a proprietary PBX number plan
- C. the European PBX standard telephony number plan
- D. the IETF North American number plan
Correct Answer: A 🗳️
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