Which of the following statements can be associated with OSI model?(a) A structured way to discuss and easier update system components(b) One layer may duplicate lower layer functionality(c) Functionality at one layer no way requires information from another layer(d) It is an application specific network modelI had been asked this question at a job interview.Origin of the question is Reference Models in section Computer Networks Introduction of Computer Network

Which of the following statements can be associated with OSI model?(a)

1.	Which of the following statements can be associated with OSI model?(a) A structured way to discuss and easier update system components(b) One layer may duplicate lower layer functionality(c) Functionality at one layer no way requires information from another layer(d) It is an application specific network modelI had been asked this question at a job interview.Origin of the question is Reference Models in section Computer Networks Introduction of Computer Network
Answer» RIGHT answer is (c) Functionality at one layer no way requires information from another layer For explanation I would say: One layer may USE the information from another layer, for example timestamp value. The information is CONTAINED in the header inserted by the previous layer. The headers are added as the packet moves from higher layers to the LOWER layers.

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