TDC 375-701
Worksheet 5
2009-10-21

From TCP/IP Protocol Suite, 4th Edition, answer:

14.9  Questions 1, 2, 3, 4, 5, 9
15.16 Questions 1, 4, 5, 6, 7, 9, 10, 12, 14-20

Also answer the following questions:

Q. Assume you receive a UDP message whose checksum is wrong.  What
   could you do?   What should you do?  What if the application is
   a file transfer?  What if the application is an online game?
   What if it is network management traffic?


Q. Assume your application is a terminal session (e.g. TELNET or a
   typical SSH connection to a remote host's shell for interactive
   work).  Assume that each character you type is immediately sent
   by the transport layer.  Now, assume what you type is queued and
   sent in a batch every so often.  What is the effect on the
   network?  What is the effect on the user experience?  Discuss
   the ramifications of these approaches on a networked game, VoIP
   and a file transfer.


Q. What IP routing protocol rides on top of UDP?


Q. On an IP network, could you figure out the size of a UDP message
   without looking at the UDP header?  If so, how?  


Q. Find out what it means when the source port of a UDP message is
   zero and explain why that might occur.  Provide a reference quote 
   the source of the text your obtain your answer from.

$Id: worksheet5.txt,v 1.1 2009/10/21 16:31:13 jtk Exp $