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2025 Digital Solutions practice exam
Complete 2025 practice examination with the original QCAA material and independent, student-frien...
2024 Digital Solutions practice exam
Complete 2024 practice examination with the original QCAA material and independent, student-frien...
Data-flow diagrams
How to use this clinic This clinic brings together authentic QCAA external-assessment questions a...
Pseudocode and desk checking
How to use this clinic This clinic brings together authentic QCAA external-assessment questions i...
Cybersecurity and the CIA triad
How to use this clinic This clinic brings together authentic QCAA external-assessment questions a...
Broader personal, social and economic impacts
 Impact is a change with a stakeholder An impact response should identify who experiences a chan...
SQL in a Unit 4 context
 SQL behind a data exchange A client might send JSON to an API, but the back end may validate th...
Emerging technologies
 A family of related ideas Artificial intelligence (AI): broad field of systems performing tasks...
Visual communication principles
 Elements are materials; principles organise them Visual elements are the building materials vis...
Classical encryption algorithms
 A shared numerical model Use the mapping A = 0, B = 1, ..., Z = 25. Addition encrypts; subtrac...
Constraints, requirements and criteria
 Four different jobs Term Question answered Example Need Why is change needed? Workers lose time...
Network performance
 Performance is more than speed Measure Meaning Effect Bandwidth The theoretical capacity of a l...
Data-exchange technologies
 One exchange uses several layers A mobile app does not reach into another system's database. It...
Australian Privacy Principles
 Privacy principles govern a data lifecycle The Privacy Act 1988 includes 13 Australian Privacy ...
Data dictionaries and specifications
 A shared description of data A data dictionary or specification documents what each data item m...
JSON and structured data
 Structured data has an organised shape Structured data follows a predictable organisation so pr...
Reading criteria and interpreting unseen stimulus
 Unseen does not mean unknowable Unseen stimulus gives you a new context, not a new subject. You...
Cognitive verbs and constructing responses
 The verb tells you what thinking to show A cognitive verb is not an instruction about response ...
User interfaces, useability and annotated mock-ups
 User interface and user experience A user interface (UI) is the point where a person interacts ...
Data-flow diagrams and exchange-system relationships
 What a data-flow diagram shows A data-flow diagram (DFD) represents where data comes from, how ...