Bits, Bytes & Binary Bootcamp GCSE

Sample Questions

1. Question: Q: What do we call raw facts and figures that have no meaning on their own?

   Answer: Data

2. Question: Q: What is data called once it has been processed or organised to give it meaning and relevance?

   Answer: Information

3. Question: Q: Which data type would you use to store a number with a decimal point, such as 45.50?

   Answer: Real

4. Question: Q: What are the small units that make up an image, and what does the name stand for?

   Answer: A: Pixels. Each has a specific colour, and the name is short for “picture element”.

5. Question: Q: Which type of graphic is made of objects defined by mathematical equations, and what advantage does this give?

   Answer: A: Vector-based graphics. They can be resized without losing quality.

6. Question: Q: What device converts sound recorded in an analogue format into a digital format?

   Answer: A: An analogue-to-digital converter (ADC).

7. Question: Q: What does data portability allow you to do?

   Answer: A: It allows data to be transferred between devices without needing to be reformatted or retyped.

8. Question: Q: What is the difference between lossless and lossy compression?

   Answer: A: Lossless compression does not reduce quality. Lossy compression reduces quality to save space.

9. Question: Q: Which type of field uniquely identifies each record in a table?

   Answer: A: A key field.

10. Question: Q: Which database object is used to request (question) specific data, filtering, sorting and displaying it based on set criteria?

    Answer: Query