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CISSP For Dummies, 4th Edition by Peter Gregory, Lawrence Miller

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Guess — as a Last Resort

Guessing is a desperate approach to test-taking, but it can be effective when all else fails. An unanswered question is definitely wrong, so don’t leave any questions unanswered. If you must guess, try to eliminate as many obviously wrong answers as possible. If you can eliminate two possible choices, you have a 50/50 chance of getting the answer right. Another strategy for guessing is to count up the total number of A, B, C, and D answers you’ve already identified. Most (although not all) multiple-choice tests, should have a fairly even distribution of answers.

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