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Cisco Unified Communications Manager Deployment Models

Chapter Description

In this chapter from Implementing Cisco IP Telephony and Video, Part 1 (CIPTV1) Foundation Learning Guide (CCNP Collaboration Exam 300-070 CIPTV1), 3rd Edition, the author team introduces Cisco Unified Communications Manager (CUCM) and explores different redundancy models.

Review Questions

Use the questions here to review what you learned in this chapter. The correct answers are found in Appendix A, “Answers to the Review Questions.”

  1. What is the maximum number of phones supported per CUCM cluster?

    1. 10,000

    2. 7500

    3. 30,000

    4. 40,000

  2. How is call admission control handled in the Centralized Call Processing model?

    1. QoS

    2. H.323 gateway

    3. H.323 gatekeeper

    4. CUCM locations

    5. CUCM regions

  3. What technology is used in the Centralized Call Processing model to reroute a call to a remote destination if there is not enough bandwidth to accommodate the call?

    1. Automated alternate routing

    2. Call admission control

    3. Quality of service

    4. Intercluster trunks

  4. What technology is used to bypass toll charges by routing calls through remote-site gateways, closer to the PSTN number dialed?

    1. Automated alternate routing

    2. Tail-end hop-off

    3. Extension mobility

    4. Call admission control

  5. Which call-processing model requires the use of SRST to provide backup for IP phones?

    1. Single-Site model

    2. Centralized multisite model

    3. Distributed multisite model

    4. Clustering over the WAN model

  6. Gatekeepers are used within which call-processing model?

    1. Single-Site model

    2. Centralized model

    3. Distributed model

    4. Clustering over the WAN model

  7. What is the maximum round-trip time requirement between CUCM servers in the Clustering over the WAN model?

    1. 20 ms

    2. 150 ms

    3. 80 ms

    4. 300 ms

  8. What is the minimum amount of bandwidth that must be dedicated to database replication in the Clustering over the WAN model?

    1. 900 kbps

    2. 1.544 Mbps

    3. 80 kbps

    4. 2.048 Mbps

  9. What platform is recommended to be used as a trunk and dial plan aggregation element?

    1. Cisco Unified SRST

    2. CallManager Express

    3. CUCM Session Management Edition

    4. Cisco Prime Collaboration

  10. True or false? Clustering over the WAN allows for up to 20 sites, each with its own subscriber to provide local call control capabilities.

    1. True

    2. False

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