Final answer:
Needs analysis is not the final step in the network design process but one of the initial steps, essential for determining the network's requirements, leading to a detailed network design and informed decision-making through cost/benefit analysis and system choice.
Step-by-step explanation:
Option 2: False. Needs analysis is not the final step in the building block approach to network design. Rather, it is actually one of the initial steps, and it is crucial for determining the requirements of the network before any design choices are made. The needs analysis involves understanding what the network must achieve and the conditions under which it must operate, which serves as a foundational step for creating a detailed design. A detailed design might include elements such as market analysis and outlining the shapes and dimensions of all physical components. Further into the process, costs are considered through methods like cost/benefit analysis, which assists in making an informed decision by weighing the marginal costs against the benefits. Lastly, the choice of a system based on thorough analysis is indispensable for both solving problems and understanding the underlying physics of the environment where the network will operate.