Question

what are the different factors affecting the effectiveness of data communication? justify your reason for choosing these factors.

Answer 1

Ans:

Data: The data is basically the information presented in some form that is agreed upon by the parties that create and use the data.

Data communication: It refers to the exchange of data between two devices via some form of transmission medium, which can be wired or wireless. For data communications to occur, the communicating devices must be a part of some communication system made up of a combination of hardware (which are basically the physical equipment) and software (the software programs).

The the effectiveness of data communication depends on following: delivery, accuracy, timeliness, and jitter.

i) Delivery: The system must be able to deliver data to the correct destination, i.e., the data must be received by the intended device or user and only by that device or user.

ii) Accuracy: The system should deliver the data accurately, i.e., the data that has been altered in transmission and left uncorrected is unusable.

iii) Timeliness- The system should deliver data in a timely manner, i.e., the data delivered late is useless. In case of video and audio, timely delivery means to deliver data as they are produced, in the same order that they are produced, and without significant delay. Such kind of delivery is called real-time transmission.

iv) Jitter- It refers to the variation of packet arrival time. Data is sent as packets, i.e., a chunk of the whole data is sent in each turn. These packets get re-joined back in the target device to represent the complete data as it is. Each packet is sent with a predefined delay or acceptable amount of delay. If packets are sent without maintaining the predefined delay then an uneven quality in the data might result. For example, let us assume that video packets are sent every 3D ms. If some of the packets arrive with 3D-ms delay and others with 4D-ms delay, then an uneven quality in the video is the result.