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Exam : CISCO 642-453
Title : Gateway Gatekeeper(GWGK)


1. You are adding a gatekeeper to an H.323 network to provide Call Admission Control. You need to be able to support three concurrent G.711 calls from a specified zone to any other zone. How much interzone bandwidth should be configured in the gatekeeper?
A. 192 Kbps
B. 240 Kbps
C. 384 Kbps
D. 480 Kbps
Answer: C

2. Which describes a proper CAC implementation in an H.323 network that uses directory gatekeepers?
A. The bandwidth commands for each zone that is registered with the directory gatekeeper are included in the directory gatekeeper configuration.
B. The zone gatekeepers maintain the bandwidth commands and the directory gatekeeper is only responsible for dial plan resolution.
C. The zone gatekeeper negotiates bandwidth requirements with the target zone gatekeeper by means of an LRQ message forwarded by the directory gatekeeper.
D. The directory gatekeeper controls call bandwidth usage between the zones.
Answer: B

3. You have a client who is designing a gateway solution for an IP communications network. The T1 needs to support ANI for both incoming and outgoing calls.How should the gateway be configured?
A. Configure an MGCP gateway so that there are two DS-0 groups on the T1 from the PSTN, one to send ANI and one to receive ANI.
B. Configure an H.323 gateway so that there are two DS-0 groups on the T1 from the PSTN, one to send ANI and one to receive ANI.
C. Configure an MGCP gateway so that there is a single DS-0 group on the T1 to the PSTN, to both send and receive ANI.
D. Configure an H.323 gateway so that there is a single DS-0 group on the T1 to the PSTN, to both send and receive ANI.
Answer: B

4. Refer to the exhibit. Which message ID can be used to track this call from the requesting endpoint?
A. 8204
B. 10.100.100.99
C. 10.200.99.99
D. 49579
E. 10.100.100.100
F. 1640003356
Answer: A

5. Refer to the exhibit. Your customer is using BRIs to the PSTN. Inbound calls can be made without error. However, outbound calls only succeed if there has been a recent inbound call. What can be done to correct this issue?
A. Disable status checking for POTS dial peers so outbound call setup will activate the BRI.
B. Configure SPIDs on the BRI so that outbound calls are sent to the correct number.
C. Change the dial peer hunt logic so the appropriate dial peer is always used.
D. Configure preferences to always select dial peer 3.
Answer: A

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