642-432 試験問題を無料オンラインアクセス

One voice packet is lost between Phone A and Phone B.
What will be the result to the listener?

• A.The listener will experience a gap in the received audio stream.
• B.The listener will hear the audio out of order when the lost packet is retransmitted.
• C.The call is terminated.
• D.The listener will hear the audio normally. Packet loss concealment will make the loss inaudible.

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 Wink-Start signaling.
Which signaling type will allow you to support the customer?

• A.QSIG
• B.CCS
• C.T-CCS
• D.FXO
• E.E&M
• F.CAS

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

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

You have been forwarded some questions by a prospective VoIP customer who would like to know the Cisco default sample size for the G.729 codec. What is it?

• A.20 ms
• B.30 ms
• C.10 ms
• D.40 ms

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