RA is issued in response to which event?

RA is issued in response to which event?

• A. After receiving a Router Solicitation
• B. Periodically regardless of RS
• C. In response to a Router Solicitation
• D. Upon DNS update

Answer: (C)

In IPv6, Router Advertisements are part of how hosts learn network configuration from routers. A host that needs information sends a Router Solicitation to the all-routers multicast address, and a router replies with a Router Advertisement that provides the necessary parameters (like the network prefix, default route, and other options) for the host to configure itself. While routers can also advertise periodically, the event that triggers an RA in response is the Router Solicitation from a host. DNS updates don’t trigger RAs.

In IPv6, Router Advertisements are part of how hosts learn network configuration from routers. A host that needs information sends a Router Solicitation to the all-routers multicast address, and a router replies with a Router Advertisement that provides the necessary parameters (like the network prefix, default route, and other options) for the host to configure itself. While routers can also advertise periodically, the event that triggers an RA in response is the Router Solicitation from a host. DNS updates don’t trigger RAs.