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Cisco 642-432 Exam Syllabus Topics:

Cisco Voice Over IP Sample Questions:

Question 1

A particular set of H.323 endpoints cannot resolve the IP address of destination endpoints. What is the H.323 approved method to fix this problem?

A. Build route tables in gateways on the segment.
B. Hard code all IP addresses.
C. Introduce a gatekeeper on the segment.
D. Choose another signaling protocol.

Question 2

Which three are supervisory signals? (Choose three.)

A. on hook
B. call waiting
C. off hook
D. busy
E. ring

Question 3

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

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

Question 4

At what point does the MGCP call agent release the setup of the call path to the residential gateways?

A. after the call agent has been notified that an event occurred at the source residential gateway
B. after the call agent has forwarded session description protocol information to the destination from the source and has sent a modify connection to the destination and a create-connection request to the source
C. does not release call path setup
D. after the call agent has sent a connection request to both the source and destination and has relayed a modify-connection request to the source so that the source and destination can set up the call path
E. after the call agent has been notified of an event and has instructed the source residential gateway to create a connection

Question 5

A network has the following characteristics:
?the use of the G.711 codec with a codec speed of 64 kbps ?a 160-byte sample size
?the use of Frame Relay without compressed Real-Time Transport Protocol (CRTP)
?FRF.12 with 6 bytes of overhead
What minimum WAN bandwidth would be required to support three simultaneous VoIP calls?

A. 247200 bps
B. 79200 bps
C. 19200 bps
D. 51600 bps

Solutions: