Actualtests CCVP 642-453
Gateway Gatekeeper(GWGK) : 642-453 Exam
642-453 Gateway Gatekeeper
Gateway Gatekeeper Exam
Exam Number: 642-453
Associated Certifications: CCVP
Duration: 75 min. (60 questions)
Available Languages: English
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Exam Description Exam Topics Recommended Training Additional Resources
Exam Description
The Gateway Gatekeeper 642-453 GWGK is the exam associated with the CCVP certification. Candidates can prepare for this exam by taking the Gateway Gatekeeper (GWGK) course. This exam tests a candidate’s knowledge of the implementation of Cisco gateways and gatekeepers, including integration of a VoIP network to both PSTN and TDM equipment. Topics covered include implementing dial plans and advanced gateway features such as SRST and DSP resources, implementing gatekeepers and directory gatekeepers to provide hierarchical dial plan resolution, and call admission control.
Exam Topics
The following information provides general guidelines for the content likely to be included on this 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 purposed the guidelines below may change at any time without notice.
Explain the function and interoperation of voice & video Gateways within an IP Communications network
Identify and describe the appropriate gateway signaling protocol to meet requirements
Identify and describe the appropriate digital line protocol to meet requirements
Identify and describe the appropriate analog line protocol to meet requirements
Describe the appropriate implementation of drop and insert multiplexing
Describe DSP functionality
Describe the different methods of provides fax and modem support
Describe the function and interoperation of Gatekeepers within an IP Communications network
Describe the function of Gatekeepers
Describe the interoperation of a Gatekeeper and a Cisco Unified CallManager
Describe the Gatekeeper Transaction Message Protocol and how it is used
Describe Dynamic Zone Prefix Registration with a Gatekeeper
Describe Gatekeeper clustering
Implement a Gatekeeper
Implement and Configure Gatekeeper to provide call admission control
Implement and Configure Gatekeeper to provide dial-plan resolution
Configure a Directory Gatekeeper to provide scalability
Implement and Configure redundancy between Gatekeeper devices
Implement and Configure Gatekeeper clustering
Configure a Gateway to register with a Gatekeeper
Configure a Cisco Unified CallManager to register with a Gatekeeper
Verify and troubleshoot Gatekeeper implementations
Implement a Gateway
Configure and verify PRI connectivity
Configure and verify BRI connectivity
Configure and verify CAS connectivity
Configure and verify Analog connectivity
Implement SRST to provide High Availability
Implement media resources on a Gateway
Implement fax and modem support on a Gateway
Configure a Gateway to provide DTMF support
Configure a Gateway to be usable by a Cisco Unified CallManager
Implement a dial-plan
Describe the components of a dial-plan
Configure digit manipulation
Implement call routing
Implement COR
Describe how the Gateway matches dial-peers
Verify and troubleshoot dial-plan implementations
Implement call applications on a Gateway
Describe how to obtain call applications
Configure call applications on a Gateway
Verify and troubleshoot call application implementations
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 security
Configure IP-to-IP Gateway to provide protocol and media interworking
Configure IP-to-IP Gateway to provide call admission control
Verify and troubleshoot IP-to-IP Gateway implementations
Exam Number/Code: 642-453
Exam Name:Gateway Gatekeeper(GWGK)
“Gateway Gatekeeper(GWGK)”, also known as 642-453 exam, is a Cisco certification. With the complete collection of questions and answers, Actualtests has assembled to take you through 100 Q&As to your 642-453 Exam preparation. In the 642-453 exam resources, you will cover every field and category in CCVP helping to ready you for your successful Cisco Certification.
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Exam DetailsThe Gateway Gatekeeper 642-453 GWGK is the exam associated with the CCVP certification. Candidates can prepare for this exam by taking the Gateway Gatekeeper (GWGK) course. This exam tests a candidate’s knowledge of the implementation of Cisco gateways and gatekeepers, including integration of a VoIP network to both PSTN and TDM equipment. Topics covered include implementing dial plans and advanced gateway features such as SRST and DSP resources, implementing gatekeepers and directory gatekeepers to provide hierarchical dial plan resolution, and call admission control.
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QUESTION 11:
If an endpoint sends the digit string “2125551212″ to a gatekeeper that contains the
following configuration, what will happen next?
gatekeeper
zone local SJ acme.com 192.168.1.1
zone remote NY acme.com 172.16.1.100
zone prefix SJ 408*
zone prefix NY 212…….
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no shut
A. An ARJ will be returned to the endpoint because the gatekeeper is unable to match all
the digits.
B. The call will be routed to the gateway registered with the gatekeeper that controls the
NY zone.
C. The call will be routed to the PSTN.
D. An ACF will be returned to the endpoint instructing it to set up a call with the
endpoint that uses the IP address contained in the ACF.
E. The gatekeeper will send an LRQ to the gatekeeper that controls the NY zone and
return a RIP RAS message to the endpoint.
F. The call will be routed to the gateway registered with the gatekeeper for the SJ zone.
Answer: E
QUESTION 12:
Certkiller .com field offices route calls to headquarters through gateways to the PSTN.
The headquarters numbers are all in the form 1-202-454-5XXX. At present, calls to
headquarters require 12 dialed digits: the access code “9″ followed by the 11-digit
number. Employees in the field offices would like to call people at headquarters by
dialing only their four-digit extensions. Which Cisco IOS command will allow them to
do this? (Assume that any associated commands needed in order to apply the one chosen
will also be added)
A. Certkiller 3(config-dial-peer)#forward-digits 11
B. Certkiller 3 (cfg-translation-rule)#rule 1 /912024545/ /^5/
C. Certkiller 3 (config-dial-peer)#prefix 912024545
D. Certkiller 3 (config)#num-exp 5… 912024545…
Answer: D
QUESTION 13:
In which three situations would an IP-to-IP gateway be useful? (Choose three.)
A. an organization has deployed a SIP IP telephony solution and needs to connect to a
SIP service provider
B. an organization needs to integrate larger PSTN gateways into their SIP network
C. two organizations have merged and both use SCCP signaling
D. an organization would like to migrate from H.323 to SIP
E. an organization needs to migrate from a Cisco Unified CallManager IP telephony
solution based on SCCP to an H.323 solution.
F. an organization using H.323 needs to integrate an acquisition that also uses H.323
Answer: A,D,F
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QUESTION 14:
Please study the exhibit carefully. Why is the gatekeeper sending a RIP RAS message to
the endpoint?
A. because it has exceeded the timeout and needs to restart the call
B. because it cannot respond to a request within the specified timeout
C. because the current call needs to be restarted due to an RRJ
D. because it has to initiate a restart to avoid timing out
Answer: B
QUESTION 15:
When a gatekeeper cluster is deployed, how does a gatekeeper in the cluster indicate to a
gateway that it should register with an alternate gatekeeper?
A. It sends an ARJ or RRJ message containing the IP address of the alternate gatekeeper
that the gateway should attempt to register with to complete the call.
B. It sends an ARJ or RRJ message accompanied by an ordered list of alternate
gatekeepers the gateway should attempt to register with.
C. It sends an ARJ or RRJ, which triggers the automatic re-registration of the gateway
with the first gatekeeper in the alternate gatekeeper list.
D. It sends an ARJ or RRJ message containing instructions to use the first member of the
alternate gatekeeper list provided by the gatekeeper.
Answer: A
QUESTION 16:
The following Cisco IOS voice translation rule is entered:
voice translation-rule 1
rule 1 /^91\(360\)\(.+\)/ /9\2/
What will be the result if the rule is tested with the number 9-1-360-269-1212 (without
the hyphens)?
A. 991
B. The number will not match the rule
C. 91360
D. 9360
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E. 92691212
F. 913601212
Answer: E
QUESTION 17:
A customer has two Cisco Unified CallManager clusters, each with an IP-to-IP gateway.
When deploying RSVP Call Admission Control between the Cisco Unified CallManager
clusters using the IP-to-IP gateways, which two are required? (Choose two.)
A. that the IP-to-IP gateways be configured as RSVP peers
B. media flow-through
C. that an IP-to-IP gateway and a gateway or gatekeeper be configured as RSVP peers
D. media flow-around
E. that the IP-to-IP gateways and the Cisco Unified CallManager clusters be configured
with an RSVP agent
Answer: A,B
QUESTION 18:
When a C5510 DSP is configured for conferencing, what other services can it be
configured to support?
A. transcoding
B. no other services
C. voice port termination
D. supplementary services
Answer: B
QUESTION 19:
Users are complaining that they are not seeing caller names on calls received from the
PSTN. Which debug command can be used to troubleshoot this problem?
A. debug vpm signal
B. debug ccs signal
C. debug isdn q921
D. debug isdn setup
E. debug isdn q931
Answer: E
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QUESTION 20:
The Acme Corporation network contains gateways, gatekeepers, and a directory
gatekeeper. If a gatekeeper containing the following configuration receives the digit
string “2125551212″ from an endpoint, what will the gatekeeper do next?
gatekeeper
zone local SJ acme.com 192.168.1.1
zone remote DGK acme.com 172.16.1.100
zone prefix SJ 408*
zone prefix DGK *
no shut
A. send a call setup message to the gateway registered with the gatekeeper that controls
the NY zone
B. send a call setup message to the gateway registered with DGK
C. send an LRQ message to DGK to resolve the call routing
D. send an ACF back to the endpoint instructing it to set up a call with the gateway
registered with the SJ gatekeeper
E. send an ARJ message to the endpoint because the gatekeeper is unable to match all the
digits
Answer: C
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