Cisco Voice over IP (CVOICE) : 642-436 Exam
Exam Number/Code: 642-436
Exam Name: Cisco Voice over IP (CVOICE)
“Cisco Voice over IP (CVOICE)”, also known as 642-436 exam, is a Cisco certification.
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642-436 CVOICE
Cisco Voice over IP
Exam Number: 642-436
Associated Certifications: CCVP
Duration: 75 minutes (60 – 70 questions)
Available Languages: English
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Exam Description Exam Topics Recommended Training Additional Resources
Exam Description
The 642-436 CVOICE Cisco Voice over IP is the exam associated with the CCVP certification. This exam tests a candidate’s knowledge of the foundational elements of VOIP calls, and the description of dial plans, and the implementation of gateways, gatekeepers and IP-IP gateways. Candidates can prepare for this exam by taking the CVOICE Cisco Voice over IP course.
Exam Topics
The following topics are general guidelines for the content likely to be included on the Remote Access exam. However, other related topics may also appear on any specific delivery of the exam. In order to better reflect the contents of the exam and for clarity purposes, the guidelines below may change at any time without notice.
Describe the components of a gateway
Describe the function of gateways
Describe DSP functionality
Describe the different types of voice ports and their usage
Describe dial peer types
Describe codecs and codec complexity
Describe a dial plan
Describe a numbering plan
Describe digit manipulation
Describe path selection
Describe calling privileges
Describe call coverage
Describe the basic operation and components involved in a VoIP call
Describe VoIP call flow
Describe RTP, RTCP, cRTP, and sRTP
Describe H.323
Describe MGCP
Describe SCCP
Describe SIP
Identify the appropriate gateway signaling protocol for a given situation
Describe voice quality considerations
Choose the appropriate codec for a given situation
Implement a gateway
Describe the gateway call routing process
Configure analog voice ports
Configure digital voice ports
Describe considerations for PBX integration
Configure dial-peers
Configure hunt groups and trunk groups
Configure digit manipulation
Configure calling privileges
Verify dial-plan implementation
Implement fax and modem support on a gateway
Configure a gateway to provide DTMF support
Describe the function and interoperation of gatekeepers within an IP Communications network
Describe the function and types of gatekeepers
Describe the interoperation of devices with a gatekeeper
Describe gatekeeper signaling
Describe Dynamic Zone Prefix Registration with a gatekeeper
Describe gatekeeper redundancy
Implement a gatekeeper
Configure devices to register with a gatekeeper
Configure gatekeeper to provide dial-plan resolution
Configure gatekeeper to provide call admission control
Verify gatekeeper operation
Implement an IP-to-IP gateway
Describe the IP-to-IP gateway features and functionality
Configure gatekeeper to support an IP-to-IP gateway
Configure IP-to-IP gateway to provide address hiding
Configure IP-to-IP gateway to provide protocol and media interworking
Configure IP-to-IP gateway to provide call admission control
Verify IP-to-IP gateway implementations
QUESTION 27:
Examine the example output.
hostname GW1
!
interface Ethernet 0/0
ip address 172.16.2.1 255.255.255.0
h323-gateway voip interface
h323-gateway voip id GK1-zone1.abc.com abc.com ipaddr 172.16.2.2
h323-gateway voip h323-id GW1
h323-gateway voip bind srcaddr 172.16.2.1
!
dial-peer voice 1 voip
destination-pattern 1212.
session-target ras
!
dial-peer voice 2 pots
destination-pattern 2125551212
no register e164
!
end
Choose the command that will restore communication with gatekeeper functionality to
this device.
A. h323-gateway voip GW1-zone2.abc.com abc.com ipaddr 172.16.2.1
B. h323-gateway voip bind srcaddr 172.16.2.2
C. h323-gateway voip h323-id GK1
D. gateway
Answer: D
QUESTION 28:
Which statement best describes gatekeeper operation when the technology prefix is
matched and the gatekeeper is using the technology prefix with hopoff?
A. The gatekeeper attempts to forward the call to the hopoff zone, but if this fails, it will
forward the call to the zone specified in the zone prefix command.
B. The gatekeeper only forwards the call to the hopoff zone if the zone prefix does not
match.
C. The gatekeeper attempts to forward the call to the zone specified in the zone prefix
command first, but if this fails, it will forward the call to the zone specified in the hopoff
command.
D. The gatekeeper always forwards the call to the zone specified in the hopoff command.
Answer: D
QUESTION 29:
A new business in Great Britain needs to have a PSTN connection that will handle a
maximum of 30 inbound and outbound calls at any given time. The customer only has
one slot available on the designated PSTN router. Which digital line type should be
recommended?
A. QSIG
B. ISDN E1 PRI
C. ISDN BRI
D. ISDN T1 PRI
Answer: B
Testinside CCVP 642-436 Questions and Answers : 155 Q&As
Updated: October 17th , 2008
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