In HSRP, which address do routers share for hosts to use as the subnet default gateway?

In HSRP (Hot Standby Router Protocol), routers share a virtual IP address that hosts use as their default gateway. This virtual IP address is configured on both the active and standby HSRP routers. When a host sends traffic to its default gateway, it sends it to this virtual IP address. The active HSRP router responds to ARP requests for this virtual IP address and forwards the traffic. If the active router fails, the standby router takes over and begins responding to ARP requests for the same virtual IP address, ensuring continuous connectivity for the hosts. A multicast address is used for one-to-many communication, not as a default gateway. A loopback IP address is a logical interface on a router, typically used for management or routing protocol stability, not as a host's default gateway. A broadcast address is used for one-to-all communication within a network segment and is not a valid default gateway address.