Internet - Packet Switching, networks of networks and TCP/IP

Welcome back readers,
Today in Independent Learning, we have been learning about the internet and what is actually happening in the internet when we are uploading information

When we are uploading files onto the internet, the file is split into different parts called packets. If somebody wants to post something on a website, i.e Facebook. The file that is being uploaded runs through different networks, for example, our school network connects to our local internet service provider, and the provider might have its own networks as well. This information travels through these networks to the destination. The file that is being uploaded is not transferred all together, but it is split into small parts called packets. If there are some packets that cannot be uploaded due to the network it is on, the packet will be switched immediately to another network. This all happens in a matter of seconds.