Actualtests 642-436
642-436 : Cisco Voice over IP (CVOICE) Last Updated Thursday, September 04, 2008 with 292 Questions
Cisco Voice over IP (CVOICE)
Exam Number: 642-436 Exam
Associated Certifications: Cisco Voice over IP (CVOICE)
Duration: 155 Q&As
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642-436 Exam: Actualtests’s Cisco Voice over IP (CVOICE) PDF
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QUESTION 1:
When setting up a VoIP call, what is the first thing a gateway router tries to match to a
dialed number?
A. session target
B. call leg
C. destination pattern
D. IP route
Answer: C
QUESTION 2:
In North America, which E&M signaling type is used most often for geographically
separated equipment?
A. Type III
B. Type II
C. Type V
D. Type I
E. Type IV
Answer: B
QUESTION 3:
When using CUBE, which two statements describe how media flow-through differs from
media flow-around? (Choose two.)
A. Media flow-through terminates the signaling channel and the RTP streams flow
directly between endpoints.
B. Media flow-through terminates the RTP streams but allows signaling to flow directly
between endpoints.
C. Media flow-around and media flow-through function in a similar manner, but media
flow-around supports NAT traversal.
D. Media flow-around provides address hiding by terminating both signaling and RTP
streams.
E. Media flow-through provides address hiding by terminating both signaling and RTP
streams.
F. Media flow-around terminates the signaling stream and allows RTP streams to flow
directly between endpoints.
Answer: E,F
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QUESTION 4:
Which two are types of Call Admission Control? (Choose two.)
A. gateway zone bandwidth
B. topology-based
C. resource-based
D. gatekeeper-controlled RSVP
E. local
F. QoS-based
Answer: C,E
QUESTION 5:
Site A uses three-digit internal numbers and remote 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, assuming the NANP numbering plan?
A. Translate all called numbers within Site A to four digits.
B. Translate all called numbers within Site B to three digits.
C. Translate all called numbers at either site to ten digits.
D. Translate all called numbers leaving Site A to ten digits.
Answer: D
QUESTION 6:
Which three are supervisory signals? (Choose three.)
A. call waiting
B. on hook
C. ring
D. busy
E. off hook
Answer: B,C,E
QUESTION 7:
Which command parameter specifies that the router should not attempt to initiate a trunk
connection but should wait for an incoming call before establishing the trunk?
A. connection trunk answer-mode 408555
B. connection trunk 408555….
C. connection-trunk 404555…. answer-mode
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D. ds0-group timeslots 1-23 type ext-sig
E. voice-port 1/0:1
Answer: C
QUESTION 8:
What does a gatekeeper do when it matches a technology prefix?
A. strips off the zone prefix and forwards the technology prefix to the remote gatekeeper
B. strips off the technology prefix and sends the matching zone prefix to the remote
gatekeeper
C. sends both the technology prefix and zone prefix to the remote gatekeeper
D. strips off both the technology prefix and zone prefix and forwards the remaining
destination number
Answer: C
QUESTION 9:
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 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
B. after the call agent has been notified of an event and has instructed the source
residential gateway to create a connection
C. does not release call path setup
D. after the call agent has been notified that an event occurred at the source residential
gateway
E. 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
Answer: E
QUESTION 10:
What is the best description of an MGCP endpoint?
A. the gatekeepers in a VoIP network
B. IP phones
C. any analog telephony device (PBX, switch, etc.)
D. the interconnection between packet and traditional telephone networks
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Answer: D
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