Hub
- is the most common networking device that connects multiple computers or other network devices together.
Switch
- is networking hardware that connects devices on a computer network by using packet switching to receive, and forward data to the destination device.
Router
- is a networking device that forwards data packets between computer networks. Routers perform the traffic directing functions on the Internet. Data sent through the internet, such as a web page or email, is in the form of data packets.
Bridge
- is a type of computer network device that provides interconnection with other bridge networks that use the same protocol. Bridge devices work at the data link layer of the Open System Interconnect (OSI) model, connecting two different networks together and providing communication between them.
Network Interface Card
- is a computer hardware component that connects a computer to a computer network. Early network interface controllers were commonly implemented on expansion cards that plugged into a computer bus.
Modem
- is a device or program that enables a computer to transmit data over, for example, telephone or cable lines. Computer information is stored digitally, whereas information transmitted over telephone lines is transmitted in the form of analog waves.
Transceivers
- is a hardware device designed to connect computers or electronic devices within a network, allowing them to transmit and receive messages. A transceiver consists of a transmitter and a receiver, hence the name. An Ethernet transceiver is also known as a media access unit (MAU).
Firewall
- is a system designed to prevent unauthorized access to or from a private network. You can implement a firewall in either hardware or software form, or a combination of both. Firewalls prevent unauthorized internet users from accessing private networks connected to the internet, especially intranets.