Last reviewed: 14 July 2026Last course-content update: 14 July 2026Originally created: [INFORMATION REQUIRED]Official exam guide reviewed: AWS Certified Data Engineer - Associate (DEA-C01) Exam Guide, Version 1.1, published 12 December 2025Syllabus alignment: Reviewed against the official objectives available as of 14 July 2026Course Update History14 July 2026: Completed six domain-based practice tests containing 1,500 questions, answer-option explanations, overall explanations, source verification, and cross-course quality checks.Prepare Through Focused, Applied AssessmentThe AWS Certified Data Engineer - Associate DEA-C01 exam covers far more than recognising service names. Candidates must evaluate ingestion patterns, processing engines, storage services, operational signals, data quality, security controls, and governance requirements within practical scenarios.This practice-test-only course provides six extensive, topic-based assessments containing 250 questions each, for a total of 1,500 questions. The tests are organised by related syllabus areas so that you can concentrate on one part of the data-engineering role, review the reasoning behind every option, and identify where further study is needed.Course OverviewCourse type: Practice-test-only courseNumber of practice tests: 6Questions in each test: 250Total questions: 1,500Difficulty: Mixed beginner, intermediate, and advancedQuestion format: Four-option multiple-choice questions with one correct answerAssessment approach: Domain-based and topic-focused rather than six identical full-syllabus mock examsExplanations: A separate explanation for every answer option and a detailed overall explanation for ev