Which statement describe the function of the perfmonCollectCounterData operation used in the Cisco Unified Communications Manager Serviceability Perfmon API?
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A. B. C. D.A.
The perfmonCollectCounterData operation is a function used in the Cisco Unified Communications Manager Serviceability Perfmon API. This API allows developers and administrators to monitor the performance of their Cisco Unified Communications Manager (CUCM) system in real-time by collecting and analyzing data from various performance counters.
Option A states that the perfmonCollectCounterData operation returns the Perfmon data for all counters that belong to an object on a particular host. This is not correct as the perfmonCollectCounterData operation is used to collect data for specific counters, not all counters belonging to an object.
Option B states that the perfmonCollectCounterData operation collects files from RTMT. This is not correct as the perfmonCollectCounterData operation is used to collect performance counter data, not files.
Option C states that the perfmonCollectCounterData operation collects the Perfmon data for all counters that have been added with perfmonAddCounter to the session handle returned from perfmonOpenSession. This is the correct answer. Before using the perfmonCollectCounterData operation, you need to add the counters you want to monitor using the perfmonAddCounter operation. Once you have added the counters, you can collect the data using the perfmonCollectCounterData operation.
Option D states that the perfmonCollectCounterData operation returns the list of available Perfmon objects and counters on a particular host. This is not correct as the perfmonCollectCounterData operation is used to collect performance counter data, not to retrieve a list of available counters.
In summary, the function of the perfmonCollectCounterData operation used in the Cisco Unified Communications Manager Serviceability Perfmon API is to collect the Perfmon data for all counters that have been added with perfmonAddCounter to the session handle returned from perfmonOpenSession.