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         Homework 1 Answer Sheet
  Introduction to Networking and Security
      Due in class on April 9, 2007
 Applied Networks and Security (IT 263 901)
Lewis 1513, Mondays, 5:45 p.m. to 9:00 p.m.
     April 2, 2007 to June 11, 2007
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STUDENT NAME:

HIGHLY RECOMMENDED:
  Submit answer sheet to Course Online <https://dlweb.cti.depaul.edu>

Assigned Reading:
  The Internet Book, Chapters 1 through 6 inclusive

  Assembly Language for Intel-Based Coputers, 5th Edition, Kip Irvine
  Section 1.3 Data Representation, pp 9-18 inclusive
  <http://kipirvine.com/asm/chapters/chapt_01.pdf>
  alt link: <http://condor.depaul.edu/~jkristof/it263/chapt_01.pdf>


Homework Questions:

1.  Why did everyone in the U.S. eventually choose to subscribe to
    telephone service?

 


2.  Describe the effect of signal loss in communications technology.




3.  Define the effect of distortion in communications technology.



4.  Why do computers and the Internet fundamentially use a binary
    encoding scheme?



5.  What is the ASCII code for the lower case letter 'm'?



6.  Answer question #3, parts a, b and c in the Irvine reading. page 18.



7.  Answer question #10, parts a, b and c in the Irvine reading, page 19.



8.  Visit the following two pages:

      <http://flows.is-net.depaul.edu>
      <http://flows.ittns.northwestern.edu>

    The first graph on each page details some characteristics about network
    traffic flowing from/to that particular institution and the rest of the
    Internet.  The positive (top half) of the graph shows some level of
    network traffic flowing from the institution to the Internet.  The
    negative half shows traffic from the Internet into the institution.
    Which institution is "pulling" more traffic, that is, how has the
    larger negative values?



9.  Visit the following page: http://www.ietf.org/rfc.html and enter
    a random number between 0001 and 4786 in the text box (or using
    the URL format they describe).  Some may not exist, just choose
    another.  Once you've found an RFC you like, detail the following
    based on your chosen RFC:

      a. RFC number:
      b. RFC Title:
      c. Author name(s):
      d. Date:



10.  As we discussed, various disciplines may intersect or appear in this
     course.  Identify one which is of particular interest to you and in
     two or more complete senteces describe why it is important to you.