Which of the following are valid IPv6 Router Advertisement (RA) Guard modes? (Choose two.)
Which of the following are valid IPv6 Router Advertisement (RA) Guard modes? (Choose two.)
Valid IPv6 Router Advertisement (RA) Guard modes include Host mode and Router mode. In Host mode, the RA Guard function anticipates that trusted ports are linked to hosts that do not transmit any Router Advertisement or Router Redirect messages, and it will discard such messages if received on these ports. In Router mode, the RA Guard function permits trusted ports to transmit Router Advertisement and Router Redirect messages, suitable for ports connected to legitimate routers.
B, C There are two primary RA Guard modes: Host mode (Default mode): In this mode, the RA Guard function expects that trusted ports are connected to hosts that do not send any Router Advertisement or Router Redirect messages. This mode will drop all such messages if received on a trusted port. Router mode: In this mode, the RA Guard function allows trusted ports to send Router Advertisement and Router Redirect messages. This mode is configured if the trusted port is connected to a legitimate router.
B & C are correct
correct B nd C https://www.cisco.com/c/en/us/td/docs/ios-xml/ios/ipv6_fhsec/configuration/15-mt/ip6f-15-mt-book/ip6-ra-guard.html