Assignment (take home quiz).
1. What would the Hamming Codeword be for each of the following?
You must show your work for each.
a. 00001111
b. 01010001
c. 00001000
2. Please check out the class web page and follow the links to:
http://cns2.uni.edu/~jacobson/secure/perl/vig.html
Use the wonderful interactive Vigenere Cipher Applet to decrypt the
following secret ciphertext message.
sxgclybhryfcvmcfirrercrmgamepblifktnorgxkgxenbmjsrg
yaydlcergmekzyqswzoesdmdepryhyielntyxxfovqkvcgiybml
qxfompmsydwyxhevstowfopjyqgmvmmskzyrovqiwroqqkrbktn
vmakxgyrqsrrokpkxgyrqdyborrc
3. Write a half page description of the difference between CSMA/CD and
CSMA/CA.
We covered CSMA/CD in class on Monday, February 26th. CSMA/CD is
more common than CSMA/CA and ethernet uses the CSMA/CD approach.
You might want to include a diagram or two to demonstrate and to
develop your understanding of the difference between CD and CA
methods.
www.google.com will give you lots of links to information about these
two protocols.
All of your description has to be in your own words. You may quote
sources if you want to quote something, but the bulk of the
description should be your own attempt to describe the difference.
Due: Monday, March 31st.