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Mr. Dubey • 53.33K Points
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Q. In layering, n layers provide service to

(A) n layer
(B) n-1 layer
(C) n+1 layer
(D) none of the mentioned
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Explanation by: Mr. Dubey 
 in layering n layer provides service to n+1 layer and use the service provided by n-1 layer.

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