Multiple choice general knowledge digital fortress kuldeep naiyer dan brown mario puzo ayn rand Reveal answer Fill a bubble to check yourself B Correct answer Explanation 'Digital Fortress' is a techno-thriller novel by Dan Brown, published in 1998, predating his more famous work 'The Da Vinci Code.' Mario Puzo wrote 'The Godfather,' Ayn Rand wrote 'Atlas Shrugged,' and Kuldeep Naiyer is not a known author.