The "building blocks" of data transmission networks include switches, routers, and cabling; therefore, how should these components of the network be protected?

What is meant by a control plane that is based on per- router control? In such cases, when we say the network control and data planes are implemented "monolithically," what do we mean?

What is the significance of being able to comprehend the concept of "traffic load" in relation to networks? Who and why should be informed? Are there any ports or services that are often used in networking? Is it feasible to define the total traffic patterns and loads merely by extrapolating from these common ports?

To what extent must components of a network, including routers and cabling, be safeguarded?