An architect is reviewing the requirements gathered from an initial client discussion:The architecture must provide...

For this question, VMware ' s architecture course material distinguishes functional/business requirements from non-functional/technical requirements according to whether the statement expresses a required business capability or outcome versus a measurable technical operating characteristic.

B is functional because the customer requires the architecture to provide a resilient multi-site topology . This is a required solution capability and directly drives the architecture that must be delivered.

C is also treated as a functional/business requirement in the VMware course material because the completed solution must support 20 percent growth over three years . This establishes a required business capability for future expansion.

D is likewise a functional requirement because the application service must remain available with essentially no interruption. The requirement defines the business outcome that the infrastructure must provide.

By contrast, A, E, and F are technical/non-functional requirements in the VMware course classification. A specifies a measurable transaction-processing characteristic, E defines a technical scaling trigger based on sustained compute utilization, and F defines a specific network latency characteristic before path failover. VMware training material explicitly uses these latter statements as examples of non-functional/technical requirements . ( Scribd )

The current VMware Cloud Foundation Architect exam guide also requires candidates to distinguish business and technical requirements and translate them into VCF design decisions. ( Broadcom Docs )

Study Guide References/Topics: Conceptual Design; Functional/Business Requirements; Non-Functional/Technical Requirements; Requirements Classification; Availability; Scalability; Multi-Site Architecture.