1. Which OSI layer is represented by segments?

 
 
 
 
 
 

2. Which OSI layer is represented by packets?

 
 
 
 
 
 

3. Which protocol uses TCP port 80?

 
 
 
 
 

4. Which of these layers is represented by data?

 
 
 
 

5. Which of the following protocols uses UDP?

 
 
 
 
 

6. Which protocol uses UDP port 69?

 
 
 
 
 

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

 
 
 
 

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

 
 
 
 

9. Which OSI layer is represented in by bits?

 
 
 
 
 
 

10. Which of the following protocols uses TCP?

 
 
 

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

 
 
 
 

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

 
 
 
 
 

13. What is the order of encapsulation?

 
 
 
 

14. Which protocol uses TCP port 23?

 
 
 
 
 

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

 
 
 
 

16. Which OSI layer is represented by packets?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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