Cisco Certified Network Associate (CCNA) Practice Exam

What is the first step to configure Netflow on a router?

1. Enable Netflow globally

2. Enter into interface configuration mode

3. Configure the Netflow collector IP address

4. Define flow export parameters

The correct answer is: Enter into interface configuration mode

The first step to configure NetFlow on a router involves entering into interface configuration mode because NetFlow is closely associated with specific interfaces on the router that will be monitored for traffic flow. By configuring NetFlow on an individual interface, you can specify which traffic should be collected and analyzed. Once you are in the interface configuration mode, you can apply NetFlow settings, such as enabling NetFlow and defining flow export parameters specific to that interface. This foundational step ensures that the router starts collecting flow data from the correct interface, setting the stage for further configuration of export parameters and collector addresses later on. As a result, entering interface configuration mode is crucial to establishing the fundamental context for all subsequent NetFlow configuration actions that you'll perform.