What are the functions of repeaters and what are their characteristics and disadvantages?
Intermediate relay relay electrical signal, usually have normally closed, normally open each four pairs of contacts, the coil was attracted by electricity, often open on the closed, often closed off! Features are flexible, easy handling, reducing a lot of switches, lack of wiring trouble,
A repeater is a connection device above the network physical layer. Applicable to the same two types of network interconnection, the main function is to transmit or forward data signals to expand the distance of network transmission. A repeater is a network device, a physical layer device for the OSI model for signal regeneration and reduction
