Common networking devices
- 1. Common networking devices PRESENTED BY :ALEENA AND HOORAIN
- 2. Definition : “Hardware devices that are used to connect electronic devices to a network “ Types : •Hub •Switch •Router •Modem
- 3. HUB: A hub is a networking device which is used to connect multiple devices to a network. Dumb device Sends data package to all workstations on network which cause network traffic Poor security Only used for small home networks
- 4. Generally used to connect computers in a LAN Has many ports.
- 5. Switch: A switch is a multiport device that improve network efficiency It is a smart device It sends specific packets of data to a specific computer on LAN using MAC address More secure than Hub Used in large networking system like universities,offices It supports unicast , multicast and broadcast. Stores MAC table.
- 6. Learning MAC address: Sending data from workstation a to b: 1.Sends data to all computers except the sender It is called flooding technique. 2.Gets the MAC address of every computer. Sending data from workstation b to a: Now the switch table has the MAC address so Data is easily transfer to workstation b.
- 7. Router: A router is a device that forward data packets between computer networks. Router is connected to atleast 2 networks commonly two LANS or WANS or a LAN and its ISPs network. Stores routing table
- 10. Modem: Modem stands for modulator and demodulator. Conversion of digital signal to analogue on receiving data by computer is called modulation. Conversion of analogue back into digital is called demodulation. It is commonly used communication device Modem send and receive data from one computer to another on the internet through telephone lines. Sending and receiving computer both must have modem.
- 12. THANKS