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Cisco 642-432 Exam Syllabus Topics:
| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Configuring Voice Ports | 20% | - Analog and digital voice ports - Signaling types: Loop Start, Ground Start, E&M - Voice port configuration and verification |
| Topic 2: Dial Plan Implementation | 20% | - Digit manipulation and translation rules - Dial peers and call legs - Path selection and call routing |
| Topic 3: Introduction to Voice over IP | 15% | - Voice quality and QoS fundamentals - Voice encoding and compression (G.711, G.729, etc.) - Characteristics of VoIP networks |
| Topic 4: Implementing VoIP Gateways | 25% | - H.323 and SIP gateway concepts - Gateway configuration and troubleshooting - MGCP gateway operation |
| Topic 5: Gatekeepers and Advanced Features | 15% | - Call admission control - Connecting to service providers/ITSP - H.323 gatekeeper functions |
| Topic 6: Voice Quality and QoS | 5% | - Delay, jitter, packet loss - QoS mechanisms for VoIP |
Cisco Voice Over IP Sample Questions:
1. Refer to the exhibit. Will these delays meet the G.114 recommendation for one-way delay?
A) No, they will not meet the recommendation for general network purposes.
B) Yes, they will meet the recommendation for most user applications.
C) No, but they will be acceptable for time-sensitive transaction processing.
D) Yes, they will meet the recommendation, provided the administrators understand the implications.
2. To hide its identity when initiating calls, Phone B requests that Server B place its calls for it. What kind of device is Server B?
A) user agent server
B) redirect
C) user agent client
D) registrar
E) proxy
3. Which option is true concerning the MGCP call agent?
A) provides only call signaling and call setup
B) manages all aspects of the call and voice stream
C) monitors the quality of each call after setup
D) acts only as a recorder of call details
4. Examine the example output.
hostname GW1 ! interface Ethernet 0/0 ip address 172.16.2.1 255.255.255.0 h323-gateway voip interface h323-gateway voip id GK1-zone1.abc.com abc.com ipaddr 172.16.2.2 h323-gateway voip h323-id GW1 h323-gateway voip bind srcaddr 172.16.2.1 ! dial-peer voice 1 voip destination-pattern 1212. session-target ras ! dial-peer voice 2 pots destination-pattern 2125551212 no register e164 !
end
Choose the command that will restore communication with gatekeeper functionality to this device.
A) h323-gateway voip h323-id GK1
B) h323-gateway voip GW1-zone2.abc.com abc.com ipaddr 172.16.2.1
C) h323-gateway voip bind srcaddr 172.16.2.2
D) gateway
5. A 9 digit number must be dialed to reach numbers on the PSTN. What process makes sure that the first digit 9 is not transmitted as part of the called number?
A) digit alternating
B) digit seizing
C) digit manipulation
D) digit masking
Solutions:
| Question # 1 Answer: A | Question # 2 Answer: E | Question # 3 Answer: A | Question # 4 Answer: D | Question # 5 Answer: C |
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