Скачать или смотреть Network Layer

The network layer is like the postal service of the internet. It handles the addressing and routing of data packets, ensuring they get delivered to the correct destination.

Think of it this way:

You: The sender
Your friend: The recipient
Data packet: Your letter
IP address: Your friend's address
Network layer: The postal system that figures out the best route to deliver your letter.
Key functions of the network layer:

Logical addressing: Assigns unique IP addresses to devices on the network.
Routing: Determines the best path for data packets to travel across the network.
Fragmentation and reassembly: Breaks down large packets into smaller ones for easier transmission and reassembles them at the destination.

Without the network layer, data packets would be lost in the vastness of the internet, unable to find their intended recipients. It's the glue that holds the internet together, enabling communication between different networks and devices around the world.