Abstract
The IMS Question and Test Interoperability (QTI) standard has had a restricted take-up, in part due to the lack of tools. This paper describes the â??ASDELâ?? test delivery engine, focusing upon its architecture, its relation to item authoring and item banking services, and the integration of the R2Q2 web service. The tools developed operate with a web client, as a plug-in to Moodle, or as a desktop application. The paper also reports on the load testing of the internal services and concludes that these are best represented as components. The project first developed a Java library to implement the system. This will allow other developers and researchers to build their own system or incorporate aspects of QTI they want to implement.
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