Network devices are hardware components that connect, manage, and direct traffic within or between networks.
Network Devices: Physical equipment used to connect computers, mobile devices, printers, and other hardware in a network to share resources and data.
| Device | Function | Common Use |
|---|---|---|
| Router | Connects multiple networks and directs data packets | Home/office internet access |
| Switch | Connects devices within a LAN and forwards data based on MAC addresses | Offices, data centers |
| Hub | Broadcasts data to all connected devices (no filtering) | Obsolete; replaced by switches |
| Modem | Converts digital data to/from signals for ISP connection | Internet access via DSL, cable, or fiber |
| Access Point (AP) | Extends wireless coverage of a network | Wi-Fi in homes, schools, and enterprises |
| Firewall (Hardware) | Filters and protects network traffic | Network security in businesses and homes |
| Bridge | Connects two LANs and filters traffic | Small office networks |
| Repeater | Amplifies and rebroadcasts signals | Extends network range in large buildings |
| Gateway | Acts as a translator between different network protocols | Connecting different network architectures |
Network devices are essential for establishing and managing communication between devices in a network. Each serves a specific function to ensure efficient, secure, and scalable data transmission.