1. Which OSI layer is represented by packets?

 
 
 
 

2. Which OSI layer is represented by packets?

 
 
 
 
 
 

3. What layer of the TCP/IP or DOD model is equivalent to the Transport layer of the OSI model?

 
 
 
 

4. At which layer of the OSI model does DHCP operate?

 
 
 
 

5. Which of the following protocol uses both TCP and UDP?

 
 
 
 
 

6. Which OSI layer converts data packets from the Data Link layer into electrical signals?

 
 
 
 

7. At which layer of the OSI model does SMTP operate?

 
 
 
 

8. Which protocol uses TCP port 23?

 
 
 
 
 

9. Which protocol uses UDP port 69?

 
 
 
 
 

10. Which OSI layer provides logical addressing?

 
 
 
 

11. Which protocol uses TCP port 80?

 
 
 
 
 

12. At which layer of the OSI model does DNS operate?

 
 
 
 

13. What are the two sublayers of the Data-link layer?

 
 
 
 

14. At which layer of the OSI model does UDP operate?

 
 
 
 

15. Which OSI layer is represented by segments?

 
 
 
 
 
 

16. At which layer of the OSI model does FTP operate?

 
 
 
 

17. Which OSI layer is represented in by bits?

 
 
 
 
 
 

18. What is the order of encapsulation?

 
 
 
 

19. Which of the following protocols uses TCP?

 
 
 

20. At which layer of the OSI model does SNMP operate?

 
 
 
 

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