What are the fundamental characteristics for the effectiveness of a data communications system?


The effectiveness of a data communications system depends on the following four fundamental characteristics.
What-are-the-fundamental-characteristics-for-the-effectiveness-of-a-data-communications-system

1. Delivery:

The system must deliver data to the exact destination. Data must not be received by other devices than the target device.

2. Accuracy: 

The system must deliver data to the destination in a way that the target device receives the data accurately. If the protocol needs to alter the while in transmission, it must alter it back to its original form before representing it to the target device. The accuracy must be maintained.

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3. Timeliness: 

The system must deliver data in timely manner. Data delivered late can become useless. Data must be delivered as they are produced, in the order they are produced and without any significant delay. 

4. Jitter: 

Jitter refers to the variation of packet arrival time. Data is sent as packets, that is, a fixed amount of the whole data is sent in each to turn. These packets get 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 delay. If packets are sent without maintaining the predefined delay then an uneven quality in the data might result.

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