Which of the following technologies can provide geographically based load balancing with high availability between two web servers with static content?

Multicast is a network communication method for sending data to a group of recipients simultaneously, not a technology for load balancing web traffic or providing high availability.

An active/passive cluster primarily focuses on high availability through failover to a standby server, but it does not actively load balance traffic across multiple active servers or intelligently distribute requests geographically.

An active/active cluster, particularly when implemented across multiple geographical regions with a Global Server Load Balancer (GSLB), can provide both geographically based load balancing by directing users to the closest or best-performing server, and high availability by ensuring all nodes are actively serving requests and can absorb traffic if another fails. This setup is ideal for static content where replication and synchronization are straightforward.

DNS round robin can distribute traffic, but it lacks intelligence for true geographical load balancing based on server load or proximity and does not inherently provide robust high availability with health checks or automatic failover.