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Computer science · University

Data protection and backups

Transforming data with a key so unauthorized readers cannot interpret it.

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Prerequisites

Basic computer and internet literacy.

Study notes

Encryption

Transforming data with a key so unauthorized readers cannot interpret it.

Backup

A separate recoverable copy of important data.

Patch

An update that corrects defects or known security weaknesses.

Data minimization

Collecting and retaining only data necessary for a defined purpose.

Worked examples

Which term best matches this description: Transforming data with a key so unauthorized readers cannot interpret it.

Encryption is the matching concept in this lesson.

Encryption

Which term best matches this description: A separate recoverable copy of important data.

Backup is the matching concept in this lesson.

Backup

Check your understanding

  1. Which concept would you apply first in a situation where an update that corrects defects or known security weaknesses.

    1. Encryption
    2. Patch
    3. Data minimization
    4. Backup

  2. Name the concept described as: Collecting and retaining only data necessary for a defined purpose.

  3. Which statement about Encryption is most accurate?

    1. A separate recoverable copy of important data.
    2. Transforming data with a key so unauthorized readers cannot interpret it.
    3. An update that corrects defects or known security weaknesses.
    4. Collecting and retaining only data necessary for a defined purpose.

  4. Explain one important difference between Encryption and Backup.

Answers and marking guidance

Answers and marking notes
  1. Patch

    The scenario directly calls for Patch.

  2. Data minimization

    The intended concept is Data minimization.

  3. Transforming data with a key so unauthorized readers cannot interpret it.

    The definition in the lesson notes gives the required condition.

  4. Encryption: Transforming data with a key so unauthorized readers cannot interpret it. Backup: A separate recoverable copy of important data.

    Credit a clear distinction using both definitions and an appropriate example if supplied.

Further reading and review references

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