A systems administrator is experiencing slowness with an application. Users are reporting the same problem. Which of the following documents would MOST likely be used to determine the cause of the…

A network diagram shows the physical or logical layout of network devices and connections, not how application data is processed, so it does not help identify application-level bottlenecks.

Server manuals contain hardware specifications and operational procedures for physical equipment and provide no insight into how an application processes data or where performance issues originate.

A dataflow diagram illustrates the path data takes through an application - including processes, data stores, and external interfaces - allowing the administrator to visually trace where processing delays or bottlenecks are occurring. By following the data flow, the administrator can correlate specific stages in the diagram to the slowness reported by users and pinpoint the failing component.

Recovery documentation outlines procedures for restoring systems after a failure or disaster and is not applicable to diagnosing the cause of an ongoing performance issue.