Probing dynamic memory layout
The dynamic memory layout is actually the runtime memory of a process, and it exists as long as the process is running. When you execute an executable object file, a program called loader takes care of the execution. It spawns a new process and it creates the initial memory layout which is supposed to be dynamic. To form this layout, the segments found in the static layout will be copied from the executable object file. More than that, two new segments will also be added to it. Only then can the process proceed and become running.
In short, we expect to have five segments in the memory layout of a running process. Three of these segments are directly copied from the static layout found in the executable object file. The two newly added segments are called Stack and Heap segments. These segments are dynamic, and they exist only when the process is running. This means that you cannot find any trace of them as part of the executable object file.