11. The TCP/IP reference model combines the data link and another layer in its link layer. Ehat is the second layer? 12.How many layers comprise the OSI Model? 13.The presentation layer in the OSI...

11. The TCP/IP reference model combines the data link and another layer in its link layer. Ehat is the second layer?

12.How many layers comprise the OSI Model?

13.The presentation layer in the OSI reference model is similar to which layer in the TCP/IP model?

14. The internet layer in the TCP/IP reference model is the equivalent to which layer in the OSI model?

15.The most widely used application/programming interface for UPD is the:?

16. What is the correct architecture in which each host can simultaneously act as both a client and a server?

17. The most widely used application/programming interface for TCP is the:?

18.What protocol is used to retrieve email messages?

19. What does SNMP define to be sent from a manager to an agent and vice versa?