Why is layering important to computer networking

Scalability — Experience has shown that a layered or hierarchal approach to networking protocol design and implementation scales better than the horizontal approach. Mobility — Greater mobility is more readily delivered whenever we adopt the layered and segmented strategies into our architectural design.

Value Added Features — It is far easier to incorporate and implement value added features into products or services when the entire system has been built on the use of a layered philosophy. Cost Effective Quality — The layered approach has proven time and time again to be the most economical way of developing and implementing any system s be they small, simple, large or complex makes no difference.

This ease of development and implementation translates to greater efficiency and effectiveness which in turn translates into greater economic rationalization and cheaper products while not compromising quality. Modularity — I am sure that you have come across plug-ins and add-ons. These are common and classical examples of the benefits to be derived from the use of a hierarchal layered approach to design.

The Graduated, Blended Approach to Migration — Compatibility enables technologies to co-exist side-by-side which results in quicker uptake of newer technologies as the older asset investments can still continue to be productive. Thus migration to newer technologies and standards can be undertaken in stages or phases over a period of time. This is what is known as the graduated blended approach; which is the opposite of the sudden adoption approach. This is due to the clearer and more distinct definition and demarcation of what functions occur at each layer when the layered approach is taken.

Task Segmentation — Breaking a large complex system into smaller more manageable subcomponents allows for easier development and implementation of new technologies; as well as facilitating human comprehension of what may be very diverse and complex systems. Portability — Layered networking protocols are much easier to port from one system or architecture to another. Go back to your Tutorial. Computer Networking. See Answer. Best Answer.

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