1) "OSI(Open Systems Interconnection) models are most commonly used by vendors"- what is the meaning of vendor here?

 

2) What is the difference between layer 2 and layer 3 in the OSI model?

 

3) In the Open System Interconnection Is there any instance where data does not use all layers and the data is received at its destination?

 

4) Which layer of the osi model is responsible for data translaton and code formatting ?

 

5) What are the advantages and disadvantages of the OSI model?

 

6) Can you please tell me the protocols for each layer of the OSI model?

 

7) In the OSI model, why does the Error Detection & Flow Control happen 2 times? These two happen in the DataLink layer and after that in the Transport layer. Whats the reason of checking them two times?

 

8) At what layer of the OSI model does a switch operate?

 

9) What are the services provided by each of the layers of OSI reference model?

 

10) Which two layers of the OSI model have the same functions as the TCP/IP model Network Access Layer ?

 

11) Drawbacks of OSI model .

 

12) Which protocol uses all 7 layers of the OSI model?

 

13) Briefly explain the need of restricted visibality while developing any network architecture.

 

14) Differences and similarity between the OSI reference model and the Cisco hierarchial model and How they are used ?