Answer / zgeorgem

there was a post similar to this but i was not able to find
it...
anyway based on the reply on that post there are 3 reasons

1. When a system is visualized in layers then u are free to
make changes in any one layer and be assured that other
layers are not affected

2. It makes troubleshooting simple

3. Layered models give a general idea of the functions of
the layers giving freedom to vendors to bring in their own
innovation otherwise the whole system can be monopolised by
a single vendor...

Answer / anju

for stnander our system we make a system and in layer
system we just made a layer and by doing so we can easly
modified and identified the trouble suppose if ip add
having some problem then we can easly go to 3rd layer and
rectify the problem and by doing so the other layers will
be not effective.

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