Online Access Free 642-432 Exam Questions

You are working with your customer in their lab to test the effect of jitter on voice quality. You have set the maximum playout delay to 40 ms on the voice enabled routers. What will be the impact on voice quality if after severe congestion the playout buffer empties and the source sends packets to the buffer faster than they are leaving?

• A.The jitter buffer will adapt to the faster-arriving packets by expanding the buffer size.
• B.After the jitter buffer fills up, subsequent packets are discarded.
• C.The jitter buffer will speed up delivery of packets to the DSP so that packets are not dropped.
• D.There will be no noticeable drop in quality.

In North America, which E&M signaling type is used most often for geographically separated equipment?

• A.Type V
• B.Type IV
• C.Type III
• D.Type I
• E.Type II

Refer to the exhibit.

Your customer wants to converge the existing PBX network with the IP network.
The three remote offices have various types of PBXs. The customer is using a combination of tie-lines and trunks to connect the PBXs today.
Which kind of connection should be implemented to allow calls to be placed from 201-5551000 to 727-555-1000 so that when the call is completed, network resources are returned for other uses?

• A.PLAR
• B.trunk
• C.tie-line
• D.answer-mode

Refer to the exhibit. Your customer wants to converge the existing PBX network with the IP network. The three remote offices have various types of PBXs. The customer is using a combination of tie-lines and trunks to connect the PBXs today.
What kind of connection should be implemented to allow a two-way permanent connection between R1 and R4?

• A.PLAR
• B.trunk
• C.tie-line
• D.answer-mode

Which dial plan characteristic shows the most obvious improvement by dropping a number translation step?

• A.post-dial delay
• B.availability
• C.scalability
• D.hierarchical design