Isolating critical services like Data Server and Repository on separate nodes, while collocating less critical services Isolating critical services enhances security and performance, especially for a financial institution, while collocating less critical services can optimize resource us-age and management. Option A is incorrect because isolating all services may lead to underutilization of resources and increased complexity. Option B is incorrect as collocating all services on a single node can create a single point of failure and performance bottlenecks. Option D is incorrect be-cause a strategic approach is necessary for efficient and secure service-to-node relationships.