Flexible NetFlow: Overview, Features, and Benefits

Flexible NetFlow

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Which statement applies to Flexible NetFlow?



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A. B. C. D. E.


Flexible NetFlow is a powerful and flexible technology that enables users to customize and extend traditional NetFlow functionality. It offers a more fine-grained approach to network traffic analysis by providing additional flow record information that can be used to analyze different types of traffic, such as voice and video.

Answer (B) is the correct statement about Flexible NetFlow. It identifies the key fields of an IP datagram from which data is captured. These key fields include source and destination IP address, source and destination port numbers, protocol, Type of Service (ToS), and input and output interfaces. These fields can be used to identify specific traffic flows and capture relevant data for analysis.

Answer (A) is not accurate because Flexible NetFlow uses more than seven key fields to identify flows. Additionally, the number of fields used may vary depending on the network and the specific configuration.

Answer (C) is correct; Flexible NetFlow allows users to define custom flows based on specific criteria. This feature enables users to analyze traffic that may not be captured by traditional NetFlow, such as encrypted traffic or traffic that uses non-standard ports.

Answer (D) is incorrect because Flexible NetFlow can be used for billing and accounting applications. It provides the necessary flow record information to calculate network usage, monitor network resources, and charge customers for network services.

Answer (E) is incorrect because Flexible NetFlow provides predefined records for different types of traffic. These records can be customized or extended to meet specific analysis requirements.