Imagine you have ten toys and you want to put them in a line. That's called a linear topology. It's like you're giving each toy its own place in a row.
Now, imagine that each toy needs to pass a message to the toy next to it. It's like they're playing a game of telephone. The first toy passes the message to the second toy, who then passes it to the third toy, and so on down the line. This is called communication in a linear topology.
But what happens if one of the toys breaks or stops working? The message can't be passed on to the next toy, and the game of telephone stops. That's a problem with linear topology – if one part of the line goes down, the whole thing can be affected.
Overall, a linear topology is a way of organizing things in a straight line, and it can be used for communication between those things. But it can have some weaknesses when it comes to reliability.