Binary (base 2)

Term

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Definition

A number system using only the digits 0 and 1. Computers store all data in binary; each digit is one bit and 8 bits make a byte.

Example: 1011 in binary = 8 + 2 + 1 = 11 in decimal.

Found in: syllabus, course specifications, school notes, past SDD papers.

Where you'll use it in the test

Syllabus area: Y11 Programming Fundamentals.

Question types it can appear in

Multiple choice: Pick the option that matches the definition or example.
Fill in the blanks: Convert between binary and decimal
Short answer: Define, outline or explain it and tie it to the scenario.

How to use it

A model sentence

General advice, built from the definition and example above

“A number system using only the digits 0 and 1.” Then apply it: 1011 in binary = 8 + 2 + 1 = 11 in decimal.

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

General advice

No linked question shows the command word for this term. Across the past short answer questions in this bank the words used most are: Explain, Outline, Describe, Compare, Classify, Analyse. Check the actual word in your question.

Go deeper

Flashcard: Binary (base 2) in Programming Fundamentals (Year 11) · study that set
Memorise: Data structures
Full term page: every question, note and marking comment for Binary (base 2)

Check yourself

Explain “Binary (base 2)” in one sentence, give an example, and name a question type that could test it.

Reveal the answer

A number system using only the digits 0 and 1. Computers store all data in binary; each digit is one bit and 8 bits make a byte.

Example: 1011 in binary = 8 + 2 + 1 = 11 in decimal.

Could be tested as: Multiple choice, Fill in the blanks, Short answer.