Which type of address does VRRP use for sending its messages?

VRRP, or Virtual Router Redundancy Protocol, uses the multicast address 224.0.0.18 for sending its messages. This address is specifically reserved for VRRP to facilitate the communication between routers that participate in the VRRP group. The routers send their advertisement messages to this address in order to inform other routers about their presence and status, enabling them to determine which router is currently the master and can forward packets.

Using a multicast address allows VRRP to efficiently reach all routers in the group without burdening the entire network with broadcast traffic. This is essential for maintaining redundancy and ensuring high availability in a network without unnecessary overhead.

In contrast, the other addresses listed do not serve this specific purpose in relation to VRRP. The addresses mentioned in the incorrect options either do not correspond to VRRP multicast addresses or are assigned for different uses, thereby affirming the correctness of the selected address.