QLD · QCAAQ&A
Digital SolutionsQ&A by dot point
A short Q&A bank for every QLD Digital Solutions syllabus dot point. Each question and answer is drawn directly from our worked dot-point page, so you can scan key concepts before opening the long-form answer.
Unit 3: Digital innovation
- Represent algorithms using pseudocode and structured English, applying sequence, selection and iteration, and trace them with a desk check to verify correctness before coding0Q&A pairs
- Select and use appropriate data structures, including variables, one-dimensional arrays and lists, and records, to organise and manipulate data within a programmed solution0Q&A pairs
- Design and implement data validation that checks input for type, range, presence and format so that only valid data enters the solution, protecting data integrity0Q&A pairs
- Design a normalised relational database with primary and foreign keys and appropriate data types, and query it with SQL using SELECT, WHERE, JOIN, ORDER BY and aggregate functions0Q&A pairs
- Recognise and describe the components of a digital solution and the interactions between users, data and digital systems, including the role of innovation in creating new opportunities0Q&A pairs
- Code programming constructs including variables, data types, operators, control structures, functions and arrays to implement an algorithm as a working, testable digital solution0Q&A pairs
- Identify and specify the functional and non-functional requirements, constraints and data requirements of a real-world problem to define the scope of a digital solution0Q&A pairs
- Apply a structured design process of exploring, generating, producing and evaluating to develop a digital solution from a real-world problem0Q&A pairs
- Apply user-centred design and usability principles to design and evaluate a user interface, considering accessibility, user experience and the needs of the target audience1Q&A pairs
- Apply usability principles and accessibility standards, including WCAG, to evaluate and improve the user experience of a digital solution for a diverse range of users0Q&A pairs
Unit 4: Digital impacts
- Identify and specify the functional, security and data requirements of a complex data exchange problem, including the systems involved, the data exchanged and the conditions for reliable exchange0Q&A pairs
- Explain how lossless and lossy data compression reduce the size of data for efficient storage and transmission, and the trade-offs each makes0Q&A pairs
- Represent the design of a data exchange using data exchange diagrams, IPO tables and pseudocode to communicate how data moves and is processed between systems0Q&A pairs
- Explain how data is exchanged between digital systems using structured formats such as JSON and XML, application programming interfaces (APIs) and network protocols, and the conditions required for reliable exchange0Q&A pairs
- Explain and apply data security techniques including encryption (symmetric and asymmetric), hashing, authentication and secure transmission to protect data confidentiality, integrity and availability0Q&A pairs
- Explain how hashing, checksums and authentication are used to verify the integrity and authenticity of data during storage and transmission0Q&A pairs
- Explain how network protocols, including TCP/IP and HTTP/HTTPS, package, address, route and reassemble data so that it is transmitted reliably between digital systems0Q&A pairs
- Evaluate the privacy, legal and ethical impacts of collecting, storing and exchanging personal data, applying privacy principles and considering the social consequences of digital solutions0Q&A pairs
- Develop, test and evaluate a prototype that exchanges data between digital systems, applying iterative development, validation and a structured test plan against the solution requirements0Q&A pairs
- Design and apply testing strategies, including test data and test cases, to verify a prototype against its requirements, and evaluate the solution using justified criteria0Q&A pairs