What are the key benefits of layered network?

Main advantages of layered network are given below:

a) Complex systems can be split into understandable subsystems.

b) Any facility executed in one layer can be made visible to all other layers.

c) Services offered at a particular level might be sharing the services of lower level.

d) Each layer may be examined and tested independently.

e) Layers can be simplified, extended or deleted at any time.

f) Enhance the interoperability and compatibility of lots of components build by different vendors.