As others have said, the test comprises of 35 questions out of a pool of 400 some odd questions. In the study guide there are ten (10) sections, with several (2-5) sub-sections, and several questions for each [sub-section] (T1A01 for instance is Tech, Sec 1, sub-section A, question 1). The practice tests (and the real test) will choose one question from each sub-section group, with a total of 35 qustions. In taking practice tests, I suggest that you do from different sites. Start out with QRZ or ARRL, but I would end with the EHam because I have found the EHam are closer to the "real" test (all of the questions listed on one page, and you do not find out if you passed until you grade it at the end.) All of the questions, and answers, will appear as they are printed. The main point is learn the material not the questions. I have some hints that will help you to study the areas you need study the most. Take a few practice tests a day, keep track of the areas you tend to miss. For instance, if you are getting Sections 1 and 2 correct most of the time, you know those sections. However, let's say you keep missing something in Section 6, sub-section A, and Section 7, sub-section B, you need to focus on those areas. (Pay attention to the question numbers, they will often look like this T1A01, T9A12, T5D10. Keep in mind that they ONLY appear like this on the PRACTICE tests, the actual test will not have this number.) When taking the [practice/real] tests, read each question -- and answers -- carefully. Pay close attention to the wording, most of the time, (but not always) the longest most detailed answer is correct. Pay close attention to "all the above" as well, most of the time is it right (but not again not always). Then, go back and double check your answers, before you have it graded (you just might find a mistake, but if all else fails go with your gut answer).
As others have said, study the material, and do not try and memorize the answers, and good luck on your test.
