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Exam : NORTEL 920-139
Title : NNCDS Multimedia Communication Server(MCS)5100 3.0


1. A customer owns and supports an existing IP-based Enterprise network. They plan to deploy an MCS 5100 3.0 system with a SIP PRI Gateway and a H.323 Gatekeeper as an application overlay on their existing network. According to the MCS 5100 logical hierarchy, the third phase of the design process is the planning for voice, video, collaboration, and Instant Messaging (IM) traffic. Which two MCS 5100 component loads should you compute? (Choose two.)
A. Compute media loads on each of the RTP Media Portals.
B. Compute media loads on each of the Media Application Servers.
C. Compute total media loads on each of the MCS 5100 media components.
D. Compute session setup loads on each of the SIP PRI Gateways.
E. Compute session setup loads on each of the H.323 Gatekeepers.
F. Compute session setup loads on each of the MCS 5100 signaling components.
Answer: CF

2. In phase 1 of the MCS 5100 3.0 system logical hierarchy design, the comparison of MCS clients to Circuit-switched telephones produces what data?
A. MCS client penetration
B. Site Preference information
C. Circuit-switched traffic loads
D. Converged Desktop agent penetration
Answer: A

3. A customer has decided to purchase an MCS 5100 0 four-server system. In designing the MCS 5100 logical hierarchy, which information is required to determine the best location for local Points of Presence (PoPs)? (Choose two.)
A. the location of the Database Module
B. the locations of the SIP client population
C. the locations of the PSTN and PRI trunks
D. the location of the Network Control Center (NCC)
Answer: BC

4. A company plans to install a non-redundant MCS 5100 3.0 system in a dual-network deployment. A RTP Media Portal will also be installed to protect the integrity of the private MCS 5100 network, and to provide multimedia services for SIP clients within and outside of the private network. How should the RTP Media Portal be connected to the network?
A. both Ethernet interfaces are within the private MCS 5100 network
B. both Ethernet interfaces are within the Enterprise public network
C. in the boundary between the private and public networks
D. in the boundary between the private and public networks as well as in series with a firewall
Answer: C

5. Click the exhibit button. In the non Call Center Enterprise deployment depicted below, what would be the percentage of traffic originating from the other networks terminating to the Site A MCS 5100 3.0 system compared to the total traffic?
A. Unable to determine with the presented information.
B. Traffic flows between communities are usually quite symmetrical, so s+t+u should equal 50%.
C. Traffic flows between communities are usually unbalanced with more out-going then in-coming traffic, so s+t+u would be less than 50%.
D. Traffic flows between communities are usually unbalanced with more in-coming then out-going traffic, so s+t+u would be greater than 50%.
Answer: B

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