Depends on the way you want to connect them.
Most probably you want to connect them using network interfaces. In that case you have to use cross-over cable. Straight cable, the sort you would use to connect your computer to a wall network socket, will not work.
service to transmit information
It was 1975.
A network cable allows two computers to exchange packets of information.
Fiber optic cable is constructed out of glass or plastic, and uses light pulses to transmit data. Copper cable is made out of copper material (not glass or plastic) and uses electrical voltages to transmit signals.
Modem is an acronym for modulator-demodulator. It is a device which makes communication between computers and other devices possible by converting data to a form which the phone or cable lines can transmit.
it is cable used for data transmission between computers
just one optic cable can carry a lot information to computers
Information Technology involves the installation, maintenance, operation, or study of computers, printers, and related equipment used to store and transmit information. Telecommunication is where people communicate over long distances using telegraphs, telephones, computers, or some form of broadcasting networks like cable or satellite television.
First you need a crossover Ethernet cable which connects Transmit lines to Receive and Receive lines to Transmit on a 10/100BaseT connection. Both computers need to have Ethernet IP address set in same range (e.g. 10.0.0.x) and same Subnet Mask and Gateway. e.g. IP address can be 10.0.0.5 on one machine and on other it can be 10.0.0.7 .. After that both computers connected to each other through a cross cable can see each other and transfer/share data.
A router is a device that acts as connection between two different networks. In this case, the cable company has one network, which includes your Internet Connection. The network is your home computer or computers. The cable router allows these two networks to connect with each other and share information.
Fiber cable, or fiber optic cable, is primarily used to transmit bandwidth. Cable service providers and internet service providers use these cables to transmit their services to devices, such as modems and cable box units in consumers' homes.
Assuming both devices are the same type of device (both computers, both routers, both switches, etc), a crossover cable is needed for this. A crossover cable will move the transmit pins of one device to the receive pins of the second device, and visa-versa.