Data communication is the transfer of information through the network. This could be a wired medium, such as optical fibers or copper wires or a www.bigdataroom.net wireless one like microwaves or radio waves, or even a computer bus. The information being transferred is usually represented by an electromagnetic signal which may vary in amplitude or speed.
Transmission of information over long distances is perhaps the most difficult part of data communication. This is because signals that travel through long conductors are vulnerable to noise or electrical distortion that could alter the original data.
Error detection plays an important aspect in the success of data communication. This is achieved by adding a checksum number to the data packets which make up an entire transmission, and then compare it to the sum of all individual packets when they arrive at their destination. If the sum is zero, there have been no errors in the data transmission.
For accurate and reliable data communication, it is important to maintain a high speed of transmission. This can be accomplished by ensuring the data transfers on a medium free of interference or by sending redundant data to avoid the loss that is caused by interruptions in a moment.
Efficient data communication is essential for a myriad of applications, including traffic information chat services, file downloads, and Internet-based services. Traffic data, for instance, can provide real-time traffic estimates to drivers and passengers on the road, which can aid them in making better decisions.