www.bigdataroom.net/how-to-recover-a-corrupt-word-or-zip-file

In our increasingly connected digital world, data communication is the vital ingredient that connects us. Understanding how different methods of data transmission work is essential for designing reliable and efficient networks. Different methods determine the way data is transmitted.

To transmit data efficiently, hardware in a data communication circuit employs a variety of techniques such as multiplexing and demultiplexing processes, which combine and separate signals into single composite ones for transmission, and then back into the individual components. This maximizes the utilization of bandwidth and lowers costs. Error detecting codes and signal amplifiers also minimize the possibility of data corruption caused by electromagnetic disturbances or other noise which can alter bits of information when they travel through an electronic communication channel.

Data communications also include a set of rules (protocol) that are followed by both the computers of the sender and receiver. These rules ensure that the message is understood and accepted correctly.

The sender can be a computer or other device that generates the message and transmits it. It could take the form of text, numbers, pictures or even videos. The receiver is the device or computer that receives the message, that could be the exact same as the sender, or different. The transmission medium is the physical pathway from the sender to the receiver, which can be a wired medium such as twisted pair wire or fiber optic cable, or wireless such as lasers, microwaves, radio waves.