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Symmetric encryption
Term Key terms bank Y12 Programming for the Web
Definition
One shared secret key encrypts and decrypts; fast, but the key must be shared safely.
Example: Fast for large data.
Found in: school notes.
One shared key.
Where it is used in the test
Syllabus area: Y12 Programming for the Web.
Question types it can appear in
- Multiple choice: Pick the option that matches the definition or example.
- Matching or table: Match it to its description, example or category.
- Fill in the blanks: Choose this term to complete a statement or table.
- Short answer: Compare with asymmetric
Where it has appeared in the paper
Secure Software Architecture (Part B). Part letters follow each paper’s own layout.
Related past questions
- Sample exam Q3 (1 mark): Encryption Secure Software Architecture (Part B) · 1 mark
These are the questions the flashcard set links to this term. Open each one and compare your answer with its marking criteria.
Study links
- Flashcard: Symmetric encryption in Programming for the Web (Year 12) · study that set
- Memorise: Processes for securing the web
- Key terms bank entry: Symmetric encryption
- Notes: Explain the processes for securing the web, including Secure Sockets Layer (SSL)… (Programming for the Web (Year 12))
How to use it in an answer
A model sentence
“One shared secret key encrypts and decrypts; fast, but the key must be shared safely.” Then apply it: Fast for large data.
In a short answer, give the definition in your own words first, then tie it to the situation in the question. Do not copy the example above unless it fits the scenario.
Command words used with it
- Identify: Recognise and name. (Sample exam Q3 (1 mark): Encryption)
Technique for the question types
- Multiple choice: Read all four options, rule out wrong ones, pick one; no penalty for guessing so never leave blank.
- Matching or table: Tick or match each statement to the right column (for example ORM v SQL, SAST v DAST).
- Fill in the blanks: Choose the right word from a list; use exact syllabus terms.
- Short answer: One clear point per mark, use the stimulus and course terms, and answer the command word.
Worked answers from the marking guidelines
Sample exam Q3 (1 mark): Encryption (1 mark): criteria and sample answer
Criteria
1: Identifies the correct answer.
Sample answer
Implement data encryption
Common mistakes
- Use the term exactly as the syllabus words it, then link it to the scenario in the question; the 2025 feedback repeatedly rewards using the stimulus.
- Answer the command word: outline gives main points only, explain gives a reason or cause, discuss gives both sides.
Related terms
Same group in the syllabus: SSL/TLS certificate · Encryption algorithm · Encryption key · Plain text and cipher text · Asymmetric encryption · Hash value · Digital signature · Authentication and authorisation (web)