Which two statements about multicast routing are true? (Choose two.)
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A. B. C. D. E.CD.
Multicast routing is a method for delivering traffic from a single source to multiple destinations simultaneously. Multicast traffic is used in various applications such as video streaming, online gaming, and software updates. Here are the two statements that are true about multicast routing:
B. IPv6 static multicast routes are supported: Multicast traffic can be delivered using either PIM (Protocol Independent Multicast) or IGMP (Internet Group Management Protocol). IPv6 supports multicast routing, and static multicast routes can be created to forward multicast traffic. A static multicast route is a manually configured path for multicast traffic. This statement is true because IPv6 supports static multicast routes.
D. You can define RPF routes for multicast on border routers to enable reverse path forwarding to an external network: Reverse Path Forwarding (RPF) is a multicast routing protocol used to prevent loops in multicast traffic. It checks the source of the multicast traffic against the multicast distribution tree to ensure that the traffic is arriving from a valid path. Border routers can use RPF to enable multicast traffic to be forwarded to an external network. This statement is true because RPF can be used on border routers to enable multicast traffic forwarding to an external network.
A, C, and E are incorrect statements about multicast routing: A. Multicast routes are used to directly forward traffic without making RPF checks: Multicast routes are not used to directly forward traffic without making RPF checks. RPF is used to prevent multicast loops and ensure that the multicast traffic is arriving from a valid path.
C. You can define RPF routes for multicast when you want multicast data to diverge from the unicast traffic path: RPF routes are not defined when you want multicast data to diverge from the unicast traffic path. RPF is used to ensure that the multicast traffic is arriving from a valid path and prevent multicast loops.
E. RPF routes for multicast can be redistributed: RPF routes for multicast cannot be redistributed. RPF is a multicast routing protocol used to prevent multicast loops and ensure that the multicast traffic is arriving from a valid path.