1. Identify a limitation of the SNA polled network (see section 12.2).


2. Identify a design feature of DARPAnet that supported the robust nature of that network.


3. What does the acronym RFCs stand for?


4. List one of the two most important RFCs that are critical standards for today's internet.


5. Which layer of the ISO/OSI Reference Model takes care of negotiating frame size and transmission speed?


6. If a communications session were to employ encryption or compression,
   which layer of the ISO/OSI Reference Model would perform this service?

   
7. Refer to the IP Version 4 Datagram Header format described in Section 12.5.1
   or Wikipedia https://en.wikipedia.org/wiki/IPv4
   What is the byte offset of the first byte in the Destination IP Address in this header?

   
8. What is the name of the field that is the first 4 bits of an IP Version 4 Datagram Header?


9. Explain the general purpose of the Transmission Control Protocol (TCP).

	
10. What are the three phases of a connection between two TCP processes running on different systems?