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CCEA GCSE Digital Technology Unit 1 overview quiz quiz

15questions. Pick an answer and you'll see why right away.

  1. How many bits are there in one byte?

  2. Which compression type lets the original data be reconstructed exactly?

  3. What is the denary (decimal) value of the binary number 00101101?

  4. In a database, what is a single column of data, such as Surname, called?

  5. Which type of memory is volatile, losing its contents when the power is switched off?

  6. A spreadsheet formula must always begin with which symbol?

  7. Which network covers a small area such as a single school building?

  8. Which security measure scrambles data so that intercepted data cannot be read without a key?

  9. What does a phishing attack rely on to succeed?

  10. Which is an advantage of storing files in the cloud rather than only on a local device?

  11. Which law makes it illegal to gain unauthorised access to a computer system?

  12. What is the role of a switch in a network?

  13. Hexadecimal is a base-16 system. How many binary digits does one hexadecimal digit represent?

  14. Which check makes sure a required database field, such as a surname, is not left blank?

  15. Which storage type uses flash memory with no moving parts, making it fast and robust but dearer per gigabyte?