What IP address is assigned for all multicast routers in the reserved range?

The correct IP address assigned for all multicast routers in the reserved range is 224.0.0.2. This address is utilized for the "All Routers" multicast group, which allows routers to communicate with one another within a local network segment.

Multicast addresses in the range of 224.0.0.0 to 224.0.0.255 are specifically reserved for use within local networks and are not routable on the internet. This particular address, 224.0.0.2, plays a crucial role in protocols such as Internet Group Management Protocol (IGMP) and for routing protocols like OSPF (Open Shortest Path First) and PIM (Protocol Independent Multicast), where it ensures that all multicast routers within a broadcast domain can join and process multicast traffic.

Choosing 224.0.0.1 refers to the "All Hosts" multicast address, which targets all hosts in a local network rather than specifically multicast routers. The other addresses provided, 224.0.0.3 and 224.0.0.4, are used for different specific purposes not related to addressing all routers. Thus, 224.0.0.2 is the most appropriate choice for identifying