The sales department is preparing to launch a high-demand product for purchase through the company's online store. The senior engineer asks the junior engineer to review the sales cloud resources to…

Additional memory is crucial for handling increased online traffic because it allows the server to process more concurrent requests and store more data in RAM, reducing reliance on slower disk I/O. This directly improves application responsiveness and prevents performance bottlenecks during a surge in user activity.

Additional storage is primarily for data persistence and typically doesn't directly address performance issues related to a surge in online traffic, unless the bottleneck is specifically disk I/O for frequently accessed data that isn't cached.

Proposing additional guests (virtual machines) for cluster 2 is a scaling strategy, but without context of cluster 2's specific utilization or its role, it's not the most direct or specific resource adjustment for traffic surge compared to augmenting memory within an existing cluster.

Proposing additional hosts for cluster 2 would increase the underlying physical infrastructure, allowing for more virtual machines, but it's a broader infrastructure change and might not be the most immediate or specific resource adjustment for an online traffic surge if existing hosts merely need more memory assigned to their virtual machines.