Year 12 Digital Solutions External Exam Revision
Revision topics
Pseudocode and algorithm reasoning
 Inputs, processes and outputs Icon: OpenMoji, CC BY-SA 4.0 Most algorithms can be underst...
Cybersecurity and the CIA triad
 Threats, vulnerabilities and risks Icon: OpenMoji, CC BY-SA 4.0 Cybersecurity protects di...
Security strategies and their appropriate uses
 Start with the vulnerability A security strategy is appropriate when it addresses a particular ...
Data-flow diagrams and exchange-system relationships
 What a data-flow diagram shows A data-flow diagram (DFD) represents where data comes from, how ...
User interfaces, useability and annotated mock-ups
 User interface and user experience A user interface (UI) is the point where a person interacts ...
Cognitive verbs and constructing responses
 The verb tells you what thinking to show A cognitive verb is not an instruction about response ...
Reading criteria and interpreting unseen stimulus
 Unseen does not mean unknowable Unseen stimulus gives you a new context, not a new subject. You...
JSON and structured data
 Structured data has an organised shape Structured data follows a predictable organisation so pr...
Data dictionaries and specifications
 A shared description of data A data dictionary or specification documents what each data item m...
Australian Privacy Principles
 Privacy principles govern a data lifecycle The Privacy Act 1988 includes 13 Australian Privacy ...
Data-exchange technologies
 One exchange uses several layers A mobile app does not reach into another system's database. It...
Network performance
 Performance is more than speed Measure Meaning Effect Bandwidth The theoretical capacity of a l...
Constraints, requirements and criteria
 Four different jobs Term Question answered Example Need Why is change needed? Workers lose time...
Classical encryption algorithms
 A shared numerical model Use the mapping A = 0, B = 1, ..., Z = 25. Addition encrypts; subtrac...
Visual communication principles
 Elements are materials; principles organise them Visual elements are the building materials vis...
Emerging technologies
 A family of related ideas Artificial intelligence (AI): broad field of systems performing tasks...
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...
Broader personal, social and economic impacts
 Impact is a change with a stakeholder An impact response should identify who experiences a chan...
Exam clinics
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...
Data-flow diagrams
How to use this clinic This clinic brings together authentic QCAA external-assessment questions a...
Practice exams
Complete 2024 and 2025 QCAA Digital Solutions practice examinations, with original stimulus and q...