"Tzoah Rotachat" is a Hebrew term that means "exploding packet". Imagine you have a balloon that you fill up with air, and then you wrap it in a small package with a little pin. When you pop the balloon with the pin, it explodes and the air rushes out really quickly - that's kind of like what happens with a "tzoah rotachat".
In computer networks, data is broken up into small pieces called "packets", and these packets are sent from one computer to another through a series of routers and switches. Sometimes, a network device might receive a packet that is too large to handle, or something goes wrong with the packet and it can't be delivered properly. When this happens, the packet is labelled as a "tzoah rotachat" and it is immediately discarded or "exploded".
This might seem like a bad thing, but actually it helps keep the network running smoothly. By getting rid of packets that can't be delivered, the network can focus on sending the packets that can be delivered without any problems. So a "tzoah rotachat" is like the network's way of getting rid of something that's not working right, so it can focus on the things that are working well.