Cisco Cyber Security Practice Exam

What device works inline, directly within the data stream?

1. IDS

2. IPS

3. Router

4. Gateway

The correct answer is: IPS

An IPS, or Intrusion Prevention System, operates inline within the data stream, which means it is positioned directly in the path of the network traffic. This allows it to analyze and monitor the data packets as they pass through. The key feature of an IPS is its ability to take action in real-time, such as blocking or preventing data packets that are identified as malicious or harmful before they reach their intended destination. This inline capability enables the IPS to proactively mitigate threats by stopping attacks while simultaneously logging incident data for further analysis. The other devices mentioned, such as an IDS (Intrusion Detection System), typically operate in a passive mode, monitoring traffic and alerting administrators about potential threats without actively intervening in traffic flow. Routers and gateways serve fundamental roles in directing traffic and facilitating communication between different networks, but they do not inherently provide the proactive threat-prevention capabilities that an IPS offers. In summary, the IPS's inline functionality distinguishes it as a critical security layer capable of immediate response to threats, enhancing overall network security.