A pool of four servers has been partially upgraded for two new servers with more memory and CPU capacity. The BIG-IP Administrator must change the load balance method to consider more connections for

Round Robin distributes connections sequentially to each pool member without regard for individual server capacity or performance.

Dynamic Ratio uses information gathered by an external monitor (like SNMP) to determine weights, but the question implies a static configuration based on known capacity, not dynamic monitoring.

The Ratio load balancing method allows an administrator to assign a weight to each pool member, enabling the BIG-IP to send more connections to servers with higher assigned ratios, effectively considering their increased CPU and memory capacity. This method distributes connections proportional to the assigned ratio, making it suitable for uneven server capabilities.

Least Connection directs new connections to the pool member with the fewest active connections, which doesn't directly account for CPU/memory capacity difference without an external monitor providing that data.