A network architect of a stock exchange broker is implementing a DR, high-availability plan. Which of the following approaches would be the best fit?

A warm site is a backup facility that is partially equipped and can be made operational within a few hours or days after a disaster. However, it does not provide continuous availability like an active-active setup. The downtime associated with transitioning to a warm site is not suitable for the high-availability requirements of a stock exchange broker.

A full mesh topology refers to a network design where every node is directly connected to every other node, facilitating efficient data routing. While it enhances network reliability, it does not inherently provide disaster recovery or high availability features. Thus, it is not the best approach for implementing a DR plan.

In-band communication involves managing data traffic through the same channel used for regular operations. While it can facilitate system management, it does not address the need for disaster recovery or high availability. This approach could lead to potential data loss or downtime during a failure, making it unsuitable for the broker's needs.