The document discusses online assessment, which is defined as measuring information through computer-based tests delivered over a network. It outlines different types of online assessments, including formative assessments that provide feedback, summative assessments, and performance testing. The uses of online assessment are also explained, such as pre-teaching tests to establish baselines, practice tests to prepare for high-stakes exams, and surveys to collect feedback. New technologies are making online assessment more efficient and sophisticated by incorporating tools like video, sound, and interactivity.