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testking CCVP 642-453

Gateway Gatekeeper Exam

Exam Number: 642-453
Associated Certifications: CCVP
Duration: 75 min. (60 questions)
Available Languages: English
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QUESTION 1:

When configuring a gatekeeper-controlled H.255 trunk, what is the maximum number of
Cisco Unified CallManager systems that can be assigned to the trunk?

A. 4
B. 1
C. 3
D. 6
E. 2
F. 8

Answer: C

QUESTION 2:

Which codec complexity should be configured to maximize the number of simultaneous voice calls that can be supported by a PVDM2-16?

A. Flex
B. High
C. Medium
D. Low

Answer: A

QUESTION 3:

Exhibit:

Please study the exhibit carefully. Certkiller .com is integrating a Cisco Unified CallManager system with the existing PBX via an E1 QSIG trunk. After the initial configuration, no calls can be placed from IP phones to PBX phones. How can this problem be resolved?

A. Add the command isdn negotiate-bchan to the serial interface.
B. Increase the ISDN T302 timer to allow more time for call setup.

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642-453

C. Change the channel selection order from descending to ascending.
D. Add the command isdn contiguous-bchan to the serial interface. Answer: A
QUESTION 4:

Which two statements are correct descriptions of bandwidth management and bandwidth control? (Choose two.)

A. Both bandwidth management and bandwidth control are H.323 mandatory functions.
B. Bandwidth management is an H.323 optional function and bandwidth control is a mandatory function.
C. Bandwidth management manages endpoint bandwidth and provides intrazone call admission control, while bandwidth control provides interzone call admission control.
D. Bandwidth management manages endpoint bandwidth requirements and bandwidth control provides call admission control.
E. Bandwidth management provides call admission control and bandwidth control manages endpoint bandwidth requirements.
F. Bandwidth management is an H.323 mandatory function and bandwidth control is an optional function.

Answer: B,E

QUESTION 5:

Please study the exhibit carefully. Certkiller .com needs to have the receptionist at extension 5000 handle all callers who exit their auto attendant by pressing “0″. After changing the Operator parameter from 5500 to 5000, callers are still sent to extension
5500 when they press “0″ in the auto attendant. What needs to be done to correct this issue?

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642-453

A. The aa application needs to be reloaded in order to recognize the parameter changes.
B. The application needs to be edited to point to the correct operator.
C. Dial peer 1 needs to be restarted using the shutdown and no shutdown commands.
D. The Operator parameter should be configured under dial peer 1 using the param command.
E. The gateway needs to be reloaded for application changes to take effect. Answer: A
QUESTION 6:
Which issue found in CAS T1s can be eliminated by converting to PRI? A. the inability to send and receive ANI on all DS0s
B. long call setup due to few signaling bits per frame
C. voice quality issues involving robbed bits
D. PSTN switch type mismatches
E. outgoing call channel order mismatch (descending vs. ascending) Answer: A
QUESTION 7:

You are working with a client who is interested in deploying a distributed IP telephony call-processing solution among the three corporate campuses. Each campus will have a Cisco Unified CallManager cluster and a gateway to the PSTN. Which three steps are required for a successful gatekeeper deployment? (Choose three.)

A. determining if each zone will be supported by more than one gatekeeper
B. ensuring the correct location of voice gateways in the network
C. implementing the correct WAN topology
D. determining the intrasite modem and fax traffic patterns
E. provisioning a common codec for all WAN connections
F. determining if gatekeeper redundancy or high availability is required

Answer: C,E,F

QUESTION 8:

How can you configure an MGCP gateway so that it is controlled by the Cisco Unified
CallManager?

A. The Cisco Unified CallManager and the MGCP gateway are peers; the Cisco Unified
CallManager does not control MGCP gateways.
B. Use the telephony-service ccm-compatible gateway command to enable the Cisco
Unified CallManager to control the gateway.

Exam 642-453: Gateway Gatekeeper Exam (GWGK)
Related Certifications: CCVP
Number of Questions: 60
Duration: 75 minutes

Exam Topics Include:
• Explain the function and interoperation of voice & video Gateways within an IP Communications network
• Describe the function and interoperation of Gatekeepers within an IP Communications network
• Implement a Gateway
• Implement a Gatekeeper
• Implement a dial-plan
• Implement call applications on a Gateway
• Implement an IP-to-IP Gateway

The Gateway Gatekeeper 642-453 GWGK is the exam associated with the CCVP certification. This exam will test your 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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