What is a functional requirement in a design specification?

What is a functional requirement in a design specification?

• A. A capability the product must provide to perform its intended function.
• B. The color scheme of the product.
• C. The packaging size.
• D. The marketing targets for the product.

Answer: (B)

Functional requirements specify what the product must be able to do to achieve its purpose. They describe the capabilities the design must provide and are testable conditions the product must meet. For example, a toaster might be required to heat bread to a certain toast level within a specific time. The color scheme, packaging size, and marketing targets aren’t about what the product does; they relate to appearance, packaging, and market strategy, which are non-functional or business considerations rather than the essential functions the product must perform.

Functional requirements specify what the product must be able to do to achieve its purpose. They describe the capabilities the design must provide and are testable conditions the product must meet. For example, a toaster might be required to heat bread to a certain toast level within a specific time. The color scheme, packaging size, and marketing targets aren’t about what the product does; they relate to appearance, packaging, and market strategy, which are non-functional or business considerations rather than the essential functions the product must perform.