350-801 Question #387: Real Exam Question with Answer & Explanation

Question

What is the importance of locations when using location-based CAC within Cisco UCM?

Options

• AThey define the geographic regions to which resources are assigned.
• BThey define the maximum bandwidth of the codec that is used for a call.
• CThey define the minimum bandwidth of the codec that is used for a call.
• DThey define the amount of available bandwidth for the link.

Explanation

In Cisco UCM's location-based Call Admission Control, locations are critical because they define the specific amount of available bandwidth for calls traversing the network link between those defined locations.

Approach. In Cisco Unified Communications Manager's location-based Call Admission Control (CAC), locations are fundamental because they serve to define and limit the total available bandwidth for calls traversing the network link between any two configured locations. This mechanism prevents oversubscription and ensures call quality by rejecting calls if the link's bandwidth capacity is exceeded.

Common mistakes.

• A. While locations might often correspond to geographic regions, their specific importance for CAC is not just general resource assignment, but precisely defining bandwidth limits for inter-location calls.
• B. Locations do not define the maximum bandwidth of a specific codec; rather, codec bandwidth is inherent to the codec itself. Locations define the aggregate bandwidth limit for the link between locations.
• C. Locations do not define the minimum bandwidth of a specific codec; codec bandwidth is an intrinsic property. Locations are used to define the overall available bandwidth for a network link.

Concept tested. Location-based CAC definition and purpose

Reference. https://www.cisco.com/c/en/us/td/docs/voice_ip_comm/cucm/admin/12_5_1/ccmcfg/CUCM_BK_C4459B99_00_cucm-administration-guide-1251/CUCM_BK_C4459B99_00_cucm-administration-guide-1251_chapter_01001.html

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