Section 3 covers, predictive and corrective preventive maintenance, based on current working practices typical - a major part of IT work schedule's practitioners. Case studies and practical worked examples included throughout the text, with additional Case Studies, specifically intended to meet the requirements of e-Quals courses at a site attached to them. * Updated throughout to cover new technologies and recent developments in the field * Practical examples and self-assessment questions included throughout the text to put theory into practice * Additional resources website features worked examples and case studies, the number of colors to download, attachments and web links