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A .Presentation Layer
B .Transport Layer
C .Network Layer
D .Datalink Layer
E .Application Layer
F .Physical Layer
G .Session Layer
in Computer Networks 1.9k views

4 Answers

17 votes
 
Best answer

Answer : C 

Network Layer 

Layers 2 and 3 of the OSI model works on

 Layer 2 : The Data Link layer, is where the Ethernet protocol, MAC addresses and switches fit in.

Layer 3 : The Network layer, is where the IP protocol, IP addresses and routers fit in


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1
but we say that router is a three layer device so it should be network data link and physical why only network
0
The Router processes data of three layers: Network, Data link and Physical layers. However it functions at network layer only.
1 vote
Option -C

Only at Network layer router work not any other layer.Without the concept of router there is no definition of Internet so please think and click on C.

Thank u for asking.
1 vote
C. network Layer
0 votes
network layer

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Network layer is used when data is to be delivered across network. So, for delivering within a network, there is no need for network layer (Ref: Pg-49, Computer Networks, Forouzan, 2 Edition). So in that case will Transport layer directly communicate with Data Link layer ? Or will Network layer be in picture, but do nothing other than simply passing data to Transport layer ?
asked Feb 10, 2018 in Computer Networks Arunav Khare 550 views
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