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Cisco 642-432 Exam Syllabus Topics:

Cisco Voice Over IP Sample Questions:

1. Refer to the exhibit. What is the minimum WAN bandwidth required to support three simultaneous VoIP calls in this network?

A) 79,200 bps
B) 247,200 bps
C) 19,200 bps
D) 51,600 bps

2. Site A uses three-digit internal numbers and Site B uses four-digit internal numbers.
All calls to the PSTN are routed through Site B.
What dial plan below best represents provision simplicity?

A) Translate all called numbers leaving Site A to ten digits.
B) Translate all called numbers at either site to ten digits.
C) Translate all called numbers within Site A to four digits.
D) Translate all called numbers within Site B to three digits.

3. 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) E&M
B) T-CCS
C) QSIG
D) CAS
E) FXO
F) CCS

4. You have set up a complex dial plan using translation rules. The following translation rule has been configured. What output would correspond to the test translation-rule command?
translation-rule 1 rule 0 ^0.. 215550210 rule 1 ^1.. 215550211 rule 2 ^2.. 215550212 rule 3 ^3.. 215550213 rule 4 ^4.. 215550214 rule 5 ^5.. 215550215 rule 6 ^6.. 215550216 rule 7 ^7.. 215550217 rule 8 ^8.. 215550218 rule 9 ^9.. 215550210

A) test translation-rule 1 617 The replaced number: 61721555021
B) test translation-rule 1 512 The replaced number: 21555021512
C) test translation-rule 1 555 The replaced number: 55521555021
D) test translation-rule 1 910 The replaced number: 21555021910

5. You have a customer that is interested in determining the number of VoIP calls their Frame Relay WAN links can support. Each of their Frame Relay WAN links has 84 kbps of bandwidth available outside all other applications and overhead. How many G.729 calls using the 8 kbps codec and 20 byte sample size can be supported?

A) 3
B) 4
C) 2
D) 1

Solutions: