I used them to prep for the CQA in 1999, so I'm sure the materials have been updated since then. The primer did have sample test questions for each section, but not as many as on the CD. The test CD was set up to practice exams, and it pulled from a pool of questions so you could simulate the number and type of questions on the exam.
Starting with the October exams, all of the ASQ exams (in English) will all be done electronically. Since this hasn't been done before, the electronic format for the exam CD from QCI will probably be different from the actual electronic ASQ exams. I'm going to speculate that QCI may adjust the CD in the future to more closely resemble the actual ASQ test conditions.