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Gateway Gatekeeper(GWGK) : 642-453 Exam

Exam Number/Code: 642-453
Exam Name: Gateway Gatekeeper(GWGK)

“Gateway Gatekeeper Exam”, also known as 642-453 exam, is a Cisco certification.
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642-453 Gateway Gatekeeper
Gateway Gatekeeper Exam

Exam Number: 642-453
Associated Certifications: CCVP
Duration: 75 min. (60 questions)
Available Languages: English
Click Here to Register: Pearson VUE
Exam Policies: Read current policies and requirements
Exam Tutorial: Review type of exam questions

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

QUESTION 27:
A dial peer is configured with an outgoing COR list. Which two conditions must be met
for calls matching this outbound dial peer to be blocked? (Choose two.)
A. The outgoing COR list must be a superset of the incoming COR list.
B. The incoming COR list and the outgoing COR list must contain the same members.
C. The outgoing COR list must be a subset of the incoming COR list.
D. An incoming COR list must be configured on the matched outbound dial peer.
E. An incoming COR list must be configured on the matched inbound dial peer.
Answer: A,E
QUESTION 28:
Which gatekeeper configuration will send all calls between zone hardware and zone
appliances through the IP-to-IP gateway in the VIA zone?
A. gatekeeper
zone local hardware acme.com 192.168.1.1
zone local appliances acme.com
zone local via acme.com invia via outvia via
zone prefix hardware 408*
zone prefix appliances 415*
no shut
B. gatekeeper
zone local hardware acme.com 192.168.1.1 invia VIA outvia VIA
zone local appliances acme.com invia VIA outvia VIA
zone local VIA acme.com
zone prefix hardware 408*
zone prefix appliances 415*
no shut
C. gatekeeper
zone local hardware acme.com 192.168.1.1
zone local appliances acme.com
zone local via acme.com
zone prefix hardware 408…….
zone prefix appliances 415…….
no shut
D. gatekeeper
zone local hardware acme.com 192.168.1.1
invia VIA outvia VIA
zone local appliances acme.com invia VIA outvia VIA
zone prefix hardware 408…….
zone prefix appliances 415…….
no shut
Answer: B
QUESTION 29:
DRAG DROP
You work as a network administrator at Certkiller .com. You need to explain how a H.323
Gateway is operating for your boss Miss Certkiller. You tell Jack that when a call is
placed by an H.323 gateway registered with a gatekeeper, a sequence of RAS messages is
exchanged.
You are required to place the options in the correct order for an interzone call.
Answer:
Explanation:
Reference:
http://www.cisco.com/en/US/tech/ CK1 077/technologies_tech_note09186a00800c5e0d.shtml