CISSP: 3 in 1- Beginner's Guide to Learn the Realms of Security and Risk Management from A-Z using CISSP Principles+ Simple and Effective Strategies+ Advanced Methods to Learn the CISSP CBK Reference
Not a good study guide for the CISSP exam, contains lots of incorrect information. Best guess is the author took reasonably accurate notes in three different classes and later made the notes into these "books". Most valuable thing? Data. Other guides note life has a near infinite value on the exam. Book 2, WAN is wifi area network. Incorrect. Book 1 has the right answer. Prepare right, use a different study guide.