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If I try to answer the question but I’m not sure of the right answer, I will cross out the incorrect answers and move on to the next question.
If I answer a question I’m sure about, I put a circle around the number of the question and another one around the letter of the correct answer.
After tackling the last question, I just start the process again from the beginning, skipping the questions I already answered (remember, there’s a circle around the number of an answered question). I repeat this process several times, each cycle gives me more answers. After a couple of hours, I’ve answered about 80% of the questions and I decide to transcribe my answers to the form (I have to be careful to skip the unanswered questions on the form). I review each answered question and transcribe the correct answer to the form. At the same time, I compile a list of all unanswered questions.
I decided to transcribe the answers after completing about 80% because:
1) I want to take the time to correctly transcribe the answers, I don’t want to make mistakes by rushing the job at the end of the 6 hour period allowed for the exam
2) I don’t want to start second-guessing my answers
After 30 minutes, I’ve transcribed all answered questions.
Now I focus on the list of remaining questions. I try to answer each question by eliminating all incorrect answers: what remains must be the correct answer. If more than one answer remains, I select one at random. I start guessing because I don’t want to stay until the end of the exam trying to find the correct answers, I feel confident because of all the other questions I answered. Since a wrong answer does not negatively impact your score, you’re better of answering all questions than leaving some unanswered. The main reason why I tackle the remaining questions like this, is that I don't want to start second-guessing my answers to the questions I felt confident about. Trust me, if you spend too much time toiling over a question where you're clueless, you'll start to doubt everything.
Finally, I transcribe the remaining answers to the form. The list of remaining questions I compiled helps me to identify which answers remain to be transcribed.
It's the first certification exam I really enjoyed, I had fun reviewing all that C code, it's a bit like discovering vulnerabilities.
Six weeks later, I got my detailed score report from SANS. Did I pass? I'll leave you too in suspense, for a couple of seconds...
http://www.giac.org/certified_professionals/listing/gssp-c.php