Answer the below questions in your own words!

How does the Application layer of the OSI model facilitate communication between computer applications and the network stack, and what are some key responsibilities of this layer?

How does the OSI layered model facilitate the troubleshooting of network components, and what are the key advantages of using a layered model for this purpose?

How do routers operate at the Network layer of the OSI model, and what are the two types of packets used at this layer?