Which statement about the effective path in the Enhanced Location Call Admission Control mechanism on Cisco Unified Communications Manager is true?
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A. B. C. D. E.C.
The effective path is the path used by Unified CM for the bandwidth calculations, and it has the least cumulative weight of all possible paths.
Weights are used on links to provide a "cost" for the "effective path" and are pertinent only when there is more than one path between any two locations.
The Enhanced Location Call Admission Control (CAC) mechanism on Cisco Unified Communications Manager (CUCM) is used to control and manage the use of network bandwidth for voice and video traffic in a Cisco Unified Communications (UC) environment. One of the key components of the Enhanced Location CAC mechanism is the effective path.
The effective path is the logical path that voice or video traffic takes between two locations in a Cisco UC environment. It represents the available bandwidth between the two locations and is used to determine if there is sufficient bandwidth to establish a new call between those locations. The effective path is defined by a sequence of links and intermediate locations that connect the two locations.
Answer A is correct because the effective path is indeed a sequence of links and intermediate locations that connect a pair of locations. The effective path includes all of the network elements that are traversed by the voice or video traffic between the two locations, such as routers, switches, WAN links, and so on.
Answer B is incorrect because the effective path is not used to define the bandwidth that is available between locations. Rather, the effective path is a representation of the available bandwidth between the locations. The bandwidth is typically defined through the use of bandwidth policies or Quality of Service (QoS) settings on the network devices.
Answer C is incorrect because there could be multiple effective paths between a pair of locations, depending on the network topology and the available bandwidth on different links. For example, if there are multiple WAN links between two locations, each with a different bandwidth capacity, then there could be multiple effective paths between those locations.
Answer D is correct because there could be multiple effective paths between a pair of locations, as explained above.
Answer E is incorrect because the effective path does not necessarily represent the WAN link itself, but rather the entire logical path between the two locations, including any intermediate network elements that are traversed by the voice or video traffic.
In summary, the effective path in the Enhanced Location CAC mechanism on CUCM is a logical path that represents the available bandwidth between two locations in a Cisco UC environment. It is a sequence of links and intermediate locations that connect the two locations, and there could be multiple effective paths between a pair of locations, depending on the network topology and available bandwidth.