Candidates for this exam support end users who run Microsoft Windows XP Professional in a corporate environment or Microsoft Windows XP Home Edition in a home environment. They should have experience using applications that are included with the operating system, such as Microsoft Internet Explorer and Microsoft Outlook Express, as well as the productivity applications used in a corporate environment, such as Microsoft Office applications. Candidates should be able to resolve operating system issues by telephone, by connecting to an end user system remotely, or by visiting an end user desktop. They should have a working knowledge of operating in a workgroup or Active Directory domain environment and how end users are affected by each environment. This exam, when combined with 70-271 (the operating system exam for desktop support technicians), should validate that a candidate can successfully answer, or escalate, all calls from end users.