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To: cs551@merlot.usc.edu
Subject: Re: CS551 - Final Project - Question on Grading guidelines 
Date: Fri, 20 Apr 2007 14:39:37 -0700
From: william@bourbon.usc.edu

Someone wrote:
 
  > For Test Case (A) Beacon-only networks -> (2) Network with 3 beacon nodes
  >  
  > The configuration parameters are set with CacheSize=600 and PermSize=600
  > (These are in KB).
  >  
  > For the following part of the test case:
  >  
  >                 in 3rd window, type:
  >   (+1 points)
  >   search filename=blondie1.mp3
  >                              should get three responses, then do
  >   (+1 points)
  >   get 1
  >                              "blondie1.mp3" should be created in the
  >                              current directory
  >  
  >                 in the 4th window, type at the UNIX prompt:
  >                              "ls -l blondie1.mp3"
  >                                  (file size should be 474736)
  >                              "openssl sha1 blondie1.mp3"
  >                                  (should be
  >                                   ffd3b197e1c0f0c27e7bdc219f553a3e6b139dfb)
  >                              "rm blondie1.mp3"
  >  
  >  
  >  
  > =========================> At this point 400 KB of the Perm space is used
  > up; which mean approx 200 KB of perm space is available. If the following
  > "get" commands are executed, then the node at window 3 will not be able to
  > save the file in the permanent area (due to lack of free space 400KB >
  > 200KB) and hence will not be able to provide the file to the user. So are
  > the subsequent steps correct?
  >  
  >                 in 3rd window, type:
  >   (+1 points)
  >   get 2
  >                              "blondie1.mp3" should be created in the
  >                              current directory
  >  
  >                 in the 4th window, type at the UNIX prompt:
  >                              "ls -l blondie1.mp3"
  >                              "openssl sha1 blondie1.mp3"
  >                              "rm blondie1.mp3"
  >  
  >                 in 3rd window, type:
  >   (+1 points)
  >   get 3
  >                              "blondie1.mp3" should be created in the
  >                              current directory
  >  
  >                 in the 4th window, type at the UNIX prompt:
  >                              "ls -l blondie1.mp3"
  >                              "openssl sha1 blondie1.mp3"
  >                              "rm blondie1.mp3"

You are correct.  I have just changed the grading guidelines
to say that "get 2" should not succeed and I removed "get 3"
and move the +1 point to "get 1".

Thanks for catching the bug!
--
Bill Cheng // bill.cheng@usc.edu <URL:http://merlot.usc.edu/william/usc/>