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4 Answers

Best answer
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18 votes

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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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.

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