Data link

Imagine you have two houses and you want to send a message from one house to the other. However, there are many other houses in between that could cause your message to get lost or mixed-up.

A data link is like a special road that connects the two houses together. It has signs and traffic lights to make sure that your message safely travels from one house to the other without getting lost or mixed-up.

Just like how you need a road to go from one place to another, computers need a data link to send information from one device to another. This data link helps computers know where the information is coming from and where it needs to go.

So, a data link is like a special road made just for computer information to travel on. It keeps the information safe and makes sure it gets to where it needs to go.