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Describe each of the osi reference model seven layers

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Reference no: EM133557358

Questions:

1. Identify and briefly describe each of the OSI reference model's seven layers.

2. What are the advantages of a layered architecture of protocols such as the OSI Reference Model?

3. What is the difference between a prescriptive network model and a descriptive network model? Give an example of each.

4. What are the advantages and disadvantages of circuit switching?

5. What are the advantages and disadvantages of packet switching?

6. Compare and contrast TCP and IP.

7. What is the difference between physical topology and logical topology?

8. Define attenuation.

9. What are the advantages and disadvantages of star networks?

10. What is a hybrid topology?

3.1 In general terms, what are four means of authenticating a user's identity?

3.2 List and briefly describe the principal threats to the secrecy of passwords.

3.3 What are two common techniques used to protect a password file? Problems

3.4 List and briefly describe four common techniques for selecting or assigning passwords.

3.5 Explain the difference between a simple memory card and a smart card.

Reference no: EM133557358

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