1. Which protocol uses TCP port 23?

 
 
 
 
 

2. Which OSI layer is represented in by bits?

 
 
 
 
 
 

3. Which OSI layer is represented by segments?

 
 
 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

7. Which OSI layer provides logical addressing?

 
 
 
 

8. Which protocol uses UDP port 69?

 
 
 
 
 

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

 
 
 
 

10. Which OSI layer is represented by packets?

 
 
 
 
 
 

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

 
 
 
 
 

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

 
 
 
 

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

 
 
 
 

14. Which of the following protocols uses TCP?

 
 
 

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

 
 
 
 

16. Which OSI layer is represented by packets?

 
 
 
 

17. Which of the following protocols uses UDP?

 
 
 
 
 

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

 
 
 
 

19. Which of these layers is represented by data?

 
 
 
 

20. Which protocol uses TCP port 80?

 
 
 
 
 

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