1-DSL Modem: A digital subscriber line (DSL) modem is a device used to connect a computer or router to a telephone line which provides the digital subscriber line service for connectivity to the Internet.
2-Broadband Router : A Broadband Router combines the features of a traditional network switch, network firewall and a DHCP server. Broadband routers are designed for convenience in setting up home networks, particularly for homes with high-speed Internet service. Besides easier sharing of a home Internet connection, broadband routers also enable sharing of files, printers and other resources among home computers.
3-Network Interface Card: Network interface cards , commonly referred to as NICs, and are used to connect a PC to a network. The NIC provides a physical connection between the networking cable and the computer's internal bus.
4-Hubs/Repeaters:Hubs/repeaters are used to connect together two or more Ethernet segments of any media type. In larger designs, signal quality begins to deteriorate as segments exceed their maximum length. Hubs provide the signal amplification required to allow a segment to be extended a greater distance. A hub takes any incoming signal
and repeats it out all ports.
5-Bridges:The function of a bridge is to connect separate networks together. Bridges connect different networks types or networks of the same type. Bridges map the Ethernet addresses of the nodes residing on each network segment and allow only necessary traffic to pass through the bridge. When a packet is received by the bridge, the bridge determines the destination and source segments. If the segments are the same, the packet is dropped ("filtered"); if the segments are different, then the packet is "forwarded" to the correct segment. Additionally, bridges do not forward bad or misaligned packets.
6-Routers: Routers filter out network traffic by specific protocol rather than by packet address. Routers also divide networks logically instead of physically. An IP router can divide a network into various subnets so that only traffic destined for particular IP addresses can pass between segments.
