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OSI and DoD models comparison

 

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Q6. Match the corresponding layers of ISO and DoD models?

DoD Model <-----             ----> ISO OSI Model

A. Process/Application               1. Application

B. Host-to-Host                       2. Presentation

C. Internet                             3. Session

D. Network Access                   4. Transport

                                            5. Network

                                            6. Data Link

                                            7. Physical

Choose best choice:

A. A->1+2; B->3+4; C->5; D->6+7

B. A->1+2+3; B->4; C->5; D->6+7

C. A->1+2+3; B->4; C->5+6; D->7

D. A->1+2+3; B->4+5; C->6; D->7

  Correct Answer: B

 

Explanation:

DoD Model maps to OSI model as below:

Process/ Application maps to OSI's Application, Presentation,Session layers (layers 7,6,5).

Host-to-Host maps to ISO's Transport layer (layer 4).

Internet maps to ISO's Network layer (layer 3).

Network Access maps to ISO's Data Link and Physical Layers (layers 6,7).

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