Briefly describe the seven-layer ISO’s OSI model (For each layer briefly describe its services and design issues). Explain why the top four layers are called ”end-to-end” layers. You should support...

Briefly describe the seven-layer ISO’s OSI model (For each layer briefly describe its services and design issues). Explain why the top four layers are called ”end-to-end” layers. You should support your explanation with an application example.