Reading a network diagram

Definition and example

Reading a network diagram is the focus of this lesson. A network diagram shows systems, trust boundaries and traffic paths. Mark internet-facing systems, internal segments and management access points. Practice: Create a short note for ‘Reading a network diagram’ in a local training document. Apply the idea to a fictional or deliberately provided sample, record what you checked, and note one limitation. Do not use real credentials, private records or systems without written permission. The task asks you to apply that idea in a small example: Why mark trust boundaries on a network diagram. Before you run the code, predict what should happen. Then Inspect the result produced by the exercise and compare it with your prediction. If the result differs, change one relevant line and run it again. Testing one change at a time makes the cause of a result easier to understand.