Question

What is data communication? What are the characteristics of data communication?

Answer 1

Data communication is a  process of sharing data or information between the two or more than two devices. The  exchange is done between two devices over a transmission medium.This process involves a communication  system which is made up of hardware and software. The hardware part invoves the sender and receiver devices  and intermediate devices through which the data passes.The software part involves the certain protocols which specify what is to be communicated, how it is to be communicated and when.

Protocol is a set of rules.

The  effectiveness of any data commmunication system depends upon the following four fundamental characteristics.

1. Delivery: Data should be delivered tothe correct destination and correct user.

2. Accuracy: The communication system should deliver the data accurately, without introducing errors

3. Timeliness: Audio and video data has to be delivered in a timely manner with out any delay,such a data delivery is called real time transmission of data.

4. Jitter: It is the variation in the packet arrival time. Uneven jitter may effect the timeliness of data being transmitted.

Data comunication is the exchanging of data or inforation between the  communicating devices.