CompTIA Network+ Practice Test

What feature does NetFlow provide for network management?

1. Traffic shaping for applications

2. Real-time firewall monitoring

3. Collection of IP network traffic data

4. Remote access for network devices

The correct answer is: Collection of IP network traffic data

NetFlow is a network protocol developed by Cisco that enables the collection and monitoring of network traffic data. Its primary function is to gather flow statistics as data packets traverse routers and switches. By providing detailed information about traffic patterns, including the source and destination addresses, port numbers, and protocols used, NetFlow helps network administrators understand how bandwidth is being utilized, identify trends, and detect anomalies within the network environment. This data is crucial for effective network management, as it allows for thoughtful analysis of network performance and aids in troubleshooting issues. By understanding traffic flow and usage, administrators can improve resource allocation, enhance security, and optimize network performance. The other options do not align with the core functionality of NetFlow; traffic shaping is a method for controlling network traffic to reduce congestion, real-time firewall monitoring relates to immediate security events, and remote access pertains to the ability to manage devices from a distance. None of these options encapsulates what NetFlow is fundamentally designed to do.