Global monitoring via MANRS focuses on what benefit?

• A. Public monitors collect route data and alert operators to hijacks or leaks
• B. It automatically prevents hijacks
• C. It replaces the need for ROAs
• D. It only monitors IPv4

Answer: (B)

Global monitoring in MANRS is about giving operators visibility into Internet routing and alerting them to suspicious activity such as hijacks or leaks. Public monitors collect route data from many networks, watch for anomalies, and send alerts so operators can investigate and respond. This capability speeds up detection and improves overall awareness across the routing ecosystem, which is the real benefit.

It does not automatically prevent hijacks—monitoring provides detection and notification, while prevention requires active measures like filtering and properly configured ROAs/RPKI. It also doesn’t replace ROAs, since ROAs define legitimate origins for routes, a separate layer of security. And it isn’t limited to IPv4; monitoring typically covers both IPv4 and IPv6 when available.