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A network engineer is notified that several employees are experiencing network performance related issues, and bandwidth-intensive applications are identified as the root cause. In order to identify which specific type of traffic is causing this slowness, information such as the source/destination IP and Layer 4 port numbers is required. Which feature should the engineer use to gather the required information?
Correct Answer: C
NetFlow Flows Key Fields A network flow is identified as a unidirectional stream of packets between a given source and destination--both are defined by a network-layer IP address and transport-layer source and des-nation port numbers. Specifically, a flow is identified as the combination of the following key fields: Source IP address Destination IP address Source Layer 4 port number Destination Layer 4 port number Layer 3 protocol type Type of service (ToS) Input logical interface