Networking Theory & Devices
Computer Networking
Medium:- Copper Cable, Fiber Optic, Wireless Radio
Protocol:- LAN: Ethernet, Taken Ring
WAN: IP(HTTP), PPP, ATM
Communication:
- Two or more nodes that are connected using some type of physical medium exchanging information using common networking protocol
Medium:- Copper Cable, Fiber Optic, Wireless Radio
Protocol:- LAN: Ethernet, Taken Ring
WAN: IP(HTTP), PPP, ATM
Communication:
- 2 or more things exchanging information across a medium using shared language
- Access more info
- Share Peripherals
- Share Applications
- Portability
- Reduce Costs of Transportation
NIC (Network Interface Card)
- Provides the hardware interface between a computer and a network
- Network adapter hardware in the form factor of an add-in card such as a PCI or PCMCIA card
Router
- are small physical devices that join multiple networks together
- Layer 3 gateway device, meaning that it connects two or more networks and that the router operates at the network Layer of the OSI Model
- Connects to your modem and creates a wireless signal in your home or office
- They can connect two different computers or to connect two computers to the Internet
Network Switches & Hubs
- is a small hardware device that joins multiple computers together within one local area network (LAN)
- Ethernet switches devices were commonly used on home networks before home routers became popular