Answer / jitemdera ( cisco systems,us)

why we need OSI Layer

When the computer system come in in world every manufacture
uses there own model to process the data

in this case the computer of one Vendor can not communicate
with another Vendor

So to make it Standard we use OSI Model

Why the OSI model have 7 layer not One this is Bullshit
Question and i guess interviewer want to show hie knowledge

There are several reason let guess if we have only one
layer capable of holding all process of All seven layer

So what algo they will use
is it FIFO or what then think about CPU utilization for a
system ( You have change yours RAM and Processors in each
second)

This is Bullshit question and you have to replay in tcp we
have 5 layer only right

Every layer have there own function and while processing the
data every layer tags there signature on the data and the
process to next layer

as per example if in a bus a driver will do the duty of
Driver ,Ticket checker the Bus will delay like any thing

So is a Bullshit question ...

Answer / adi

for reliable delivery of data

Answer / santosh

* Standardizes the N/W components to allow multiple vendor development & support.
* By breaking into 7 Layers to make learning easier.

Answer / sagar

OSI model has 7 layers.

each layer has its own use , depending on the layers devices
are their say switch for layer 2 router for layer 3 , hence
depending on the issue the troubleshooting can be made easily

Answer / santhoshreddy katam

OSI layers having 7 layers because of all protocols handled
by one layer is not efficiently.the category of 7 layers
handled the proocols is very simple.in this we divide the
protocols based on their purpose.for example highlevel
protocols are included in appliction layer and tcp,udp in
ranspor layer.

Answer / samyak

I will ease our configuration and troubleshooting steps
.Like if telnet is not working then we easily find out the
problem of application layer we don't have to check everything .

Answer / prasad

sorry for my answer, why do you have two organs in the body
why shouldnt you only one hand, ear, eye,leg? just like
this only for efficiency and performance they have 7
layers. please dont mind.

Answer / amit dey

Troubleshooting issues will get very difficult and complex If Only one layer is used bcoz
If all layers are used Isolating the problem is related to which layer becomes easy

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