7 Layers
1 application layer
2 Presentation layer
3 Section layer
4 Transport layer
5 Network layer
6 Data link layer
7 physical layer

In the above answer the 3rd layer is not correct.It should
be session layer

Network Layer are 7
1.Physical Layer 
2.Data Link Layer 
3.Network Layer 
4.Transport Layer 
5.Session Layer 
6.Presentation Layer 
7.Application Layer

Hi all,

I am bit confused about this question,Network itself one of 
the Layer in OSI model if am not wrong,and there is no sub 
layers as such in network layer
 However Network layer is called as layer 3 in OSI model 
and it works on packed level

Thank you 
 Surya MR

3 layers

Network Layer is itself a layer who ediot asked this 
ques.!!!!!!!!!

frahatu first of all read OSI layer seriously.
Network layer is also called Layer 3 of OSI model used for 
routing purpose.It is itself one of the layer, so how can u 
ask without knowing this. I think by mistake u write this.

Just keep in ur mind that Network layer is the third layer 
of OSI layer Arcitecture

1 physical

2data link

There r 7 layers.

check the question

Network layer is also called Layer 3 of OSI model.
network layer no have any layers.
your method of asking the question is wrong.

network layer itself is layer 
im sure 4 layers in tcp/ip and 7 layers in osi model

Hi all,

 This is confusing question.Dont be confused because the 
quesioner wanna to know ur IQ. Network layer is one of the 
layer of OSI Model and its place is 3rd in OSI MOdel.
  
If question is like this : How many layers in Network? Then 
according to me , it's answer is 7.

This is not a valid question. The Network Layer is a layer 
on its own and does not contain any sublayers. The question 
should be: How many layers are there in the OSI Reference 
Model and what are they?

Two types of OSI network-layer services are available: 
Connectionless Network Service (CLNS) and Connection-
Oriented Network Service (CONS). CLNS uses a datagram data 
transfer service and does not require a circuit to be 
established before data is transmitted.

1)application
2)Transport
3)Internet
4)Network Access

taht is not avalid quesion bcz netwok layer itself a layer

question is litle bit confused

network layer has 2 layer
1,phisical layer
2,logical layer

CLNS and CONS is used to define the protocol's function in 
network layer.
the protocol TCP (CONS)and this is not a layer.
UDP(CLNS) this defines UDP is connectionless protocol and 
again this is not a layer.

7

Pls note network layer is itself a part of OSi layer I mean 
to say Layer no-3 .

1.Physical Layer 
2.Data Link Layer 
3.Network Layer 
4.Transport Layer

describe OSI layers ?

Hi
This is kartik from d.dun.
Network Layer are of 7 types.
1.Physical Layer 
2.Data Link Layer 
3.Network Layer 
4.Transport Layer 
5.Session Layer 
6.Presentation Layer 
7.Application Layer

only network layer
question may be wrong
two network services are avilable
conection less(UDP) and connection oriented(TCP).....