Cisco Certified Network Associate (CCNA) Practice Exam

What are the two essential components of a Netflow system?

1. Netflow enabled router and a Netflow server

2. Netflow enabled router and Netflow collector

3. Netflow collector and a router

4. Netflow server and Netflow interface

The correct answer is: Netflow enabled router and Netflow collector

A NetFlow system is primarily composed of two essential components that work together to capture and analyze network traffic data. The first component is the NetFlow-enabled router, which is responsible for gathering and exporting flow data. This router collects information about the packets passing through it, such as source and destination IP addresses, ports, and the protocol used. The second component is the NetFlow collector. This is a centralized system or server that receives, stores, and processes the flow data sent from the NetFlow-enabled router. The collector can analyze the data to provide insights into network usage, performance, and security. Together, these two components allow for effective traffic analysis and monitoring, which is crucial for network management and troubleshooting. While other options mention components like a NetFlow server and interface, they do not capture the fundamental relationship between the router exporting data and the collector receiving and analyzing it, which is vital for a comprehensive NetFlow system.