A network hub is used to connect multiple computer systems together, allowing them to share resources and data. It works by interconnecting the computers in a Local Area Network (LAN). The hub broadcasts the same signal from each port, so when one system sends data, it is sent out to all the other systems. This allows users in the network to communicate and share files, programs, printers, disk storage and other resources.
Network hubs are available in a variety of sizes and port configurations. They can range from five to over 50 ports, depending on the needs of the network. Smaller networks typically use five or eight port hubs, while larger networks could use 24- or 48-port hubs. Network hubs are designed to support either 10 Megabit or 100 Megabit Ethernet connections. They may also be used to link Ethernet devices that use different speeds, such as 10 Megabit and 100 Megabit. Hubs can also connect other types of devices, such as wireless access points, bridge devices, and VoIP phones.
When setting up a network, hubs are often the most cost-effective solution for connecting computers. In addition, they are easy to install and do not require any special configuration. If your network needs expand in the future, you can simply add more hubs, as they expand much more easily than switches.
There are other advantages to using hubs. For example, they are better at handling collisions than switches, since hub ports act as a single collision domain. They also allow full-duplex communication and broadcast data out of all the ports, which can be beneficial in certain situations. Finally, they provide better isolation between connected systems, which helps prevent security breaches.
On the downside, hubs are less efficient than switches because of their shared bandwidth. When all ports are being used, every device must compete for bandwidth, which can cause delays and slower performance. In addition, hubs cannot handle large amounts of data or high traffic applications, making them unsuitable for larger networks.
Overall, network hubs are an effective and inexpensive solution for small networks. With a good network design, hubs can offer reliable communications, file and printer sharing, and secure protection from intruders. However, if your network grows too large or requires advanced features, you may need to switch to a more powerful device, such as a switch.