Book excerpt: Offering a fast and easy way to learn advanced AS/400 operations concepts and prepare for IBM's test 000-053 (AS/400 Professional System Operator), this book takes basic- to intermediate-level AS400 operators through all of the aspects of AS/400 operations required to pass the 000-053. It serves both as a study guide in preparation for the certification and as an excellent operator training text. Users learn the necessary concepts of advanced operations through a step-by-step tutorial on each topic followed by hands-on lab exercises that will reinforce what was learned in the text. This certification study guide is the second in the operator's certification series.