Okay kiddo, so a hypercube internetwork topology is a cool way that computers can talk to each other. It kinda looks like a cube, but it's got a whole bunch of lines and connections all over it.
Think of it like a big toy block castle that you and your friends are playing with. Each of you are a computer, and you can build a straight, diagonal or edges-only structure to connect to the other blocks. Now imagine that all the sides of the block are connected to other blocks in the same way. All the blocks will be able to communicate with each other really quickly, and if one of the blocks needs to get a message to another block, it can just zoom through these edges, making a quick trip to the other side of the block.
This is kind of like how computers talk to each other with a hypercube topology. They all have multiple paths they can take to talk to each other, which makes it super fast and efficient. So if one computer needs to send a message to another, it won't have to go through a lot of slow connections, it can just go straight there through a path that's already been set up.
This type of network topology is especially good for big projects, like research or scientific simulations, where lots of computers need to work together to get things done. The hypercube design helps them all talk to each other quickly and easily, making sure everyone can keep up with the project.
So, in short, a hypercube internetwork topology is a way that computers can talk with each other that is really fast and efficient, kind of like building with toy blocks.