Question

In ________, the multicast packet must reach only those networks that have active members for that particular group.

a) Dense mode
b) Sparse mode
c) Shared mode
d) Specific mode

Answer 1

In sparse mode, multicast packets are distributed only to networks with active members requesting membership for a specific group, using a conservative approach to construct explicit multicast distribution trees.

Step-by-step explanation:

In sparse mode, the multicast packet must reach only those networks that have active members for that particular group. Sparse mode is a multicast routing technique used in a network where group members are sparsely distributed across multiple networks. In contrast to dense mode, which initially floods the packets out all interfaces and then prunes back the ones without interested receivers, sparse mode uses a more conservative approach that constructs an explicit multicast distribution tree only to those networks with members that have explicitly requested membership to a particular multicast group.