http://www.cs.wisc.edu/~burnett/cs302/exam2_info.html
Those sections/topics in boldtype will be stressed more than the others.
Question Type Distribution (as of Nov 7)
20% -- Miscellaneous -- terminology, design, etc.
25% -- Tracing
55% -- Coding
Approximate Chapter Distribution (as of Nov 7)
Chapter 5 -- 05.0%
Chapter 7 -- 30.0%
Chapter 6 -- 52.5%
Chapter 9 -- 12.5%
Note that the exam material is strongly weighted to the last two week's material. Also, some questions cover topics from more than one exam -- see question 2 from the third quiz.