Which of the following multicast addresses corresponds to all routers in a network?

The multicast address that corresponds to all routers in a network is 224.0.0.2. This address is specifically designated for all routers within a local network segment that are using the Internet Group Management Protocol (IGMP). It is utilized by multicast routing protocols to communicate with all routers on the local segment.

Multicast addresses are organized within specific ranges for different purposes, and 224.0.0.2 falls within the range of addresses reserved for well-known multicast groups. In the context of multicast routing, using 224.0.0.2 allows a sender to reach all multicast-capable routers, which can then forward the traffic appropriately across the network.

In contrast, the other addresses serve different roles in multicast communications. For instance, 224.0.0.5 is used to reach all OSPF routers, while 224.0.0.10 is designated for all DVMRP routers. Therefore, knowing the specific multicast addresses and their purposes is crucial for effective multicast routing and management in network configurations.