Cnet cn40bc Guia De Informação

 
A network is a group of computers, printers, and other devices that are connected and 
communicate wit each other.  The medias used in networking can be copper  wire , fiber 
optics or radio waves.  The three type of networks are Local Area, Metropolitan and 
Wide Area Network which are commonly called LAN, MAN and WAN. 

 
LAN topologies define the manner in which network devices are organized.  

Ethernet is the most widely used network standard.  Specified in, IEEE802.3, Ethernet 
was originally developed by Xerox and then developed further by Xerox, DEC, and Intel. 

 
Unshielded Twisted Pair and is the type of cable used in Ethernet networks. 

 
CAT 5 is the highest quality UTP cable and is tested for conductivity over a 100MHz 
signal.  The Cat5 cable is not a guarantee that the cable is 100% compliant to the 
standards especially if it is not properly connected to the RJ-45 connector/jack. 

 
Pin 1 and 2 are connected to the same twisted pair wire.      1-Orange/White    2-Orange       
Pin 3 and 6 are connected to the same twisted pair wire.      3-Green/White    6-Green 
Pin 4 and 5 are connected to the same twisted pair wire.      4-Blue/White      5-Blue 
Pin 7 and 8 are connected to the same twisted pair wire.      7-Brown/White   8-Brown 

 
Pin 1 to Pin 3                            Pin 5 to Pin 5 
Pin 2 to Pin 6                            Pin 6 to Pin 2 
Pin 3 to Pin 1                            Pin 7 to Pin 7 
Pin 4 to Pin 4                            Pin 8 to Pin 8 
 

 

The token ring is the second most widely-used LAN protocol after Ethernet.

 

A token ring network is a local area network in which all computers are connected in a ring or star 
topology and a token-passing scheme is used in order to prevent the collision of data between