Final answer:
A switch network can be expanded anytime without affecting the operation of the network. However, the central device, a switch, becomes the single point of failure.
Step-by-step explanation:
In computer networks, computers connect to each other through a central device called a hub or switch. A switch is more commonly used in modern networks. A switch is a hardware device that connects multiple computers, printers, and servers together on a local area network (LAN). It uses packet switching to forward data packets between devices, allowing them to communicate with each other.
A switch network can be expanded anytime without affecting the operation of the network. This is because each computer or device connected to the switch has its own dedicated connection and bandwidth. When new devices are added, they are simply connected to an available port on the switch, without causing disruption to other devices.
However, one limitation of a switch is that the central device becomes the single point of failure. If the switch fails, all the devices connected to it will lose network connectivity. This is why redundant switches, backup power supplies, and other measures are often implemented in network setups to minimize the impact of such failures.