Computing

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Optical and magnetic storage

In this lesson, we will build on what we learnt in the previous 'Secondary Storage' lesson; this lesson involves exploring optical and magnetic storage devices. We will learn how each type of storage operates, and explain how data is written and read from each device. We will then actively rank the storage device in a number of key areas of comparison.

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Quiz:

Intro quiz - Recap from previous lesson

Before we start this lesson, let’s see what you can remember from this topic. Here’s a quick quiz!

Q1.Which features of RAM make it unsuitable for long term storage? (Select all that apply)

Select three (3) boxes

1/5

Q2.What features of ROM make it unsuitable for long term storage? (Select all that apply)

Select three (3) boxes

2/5

Q3.What are the three categories of secondary storage?

3/5

Q4.Solid state drives are fast to read and write and take less energy to run than other devices. Which feature allows them to do this?

4/5

Q5.Which device has faster read and write speeds?

5/5

This quiz includes images that don't have any alt text - please contact your teacher who should be able to help you with an audio description.

Unit quizzes are being retired in August 2023

Why we're removing unit quizzes from the website >
Quiz:

Intro quiz - Recap from previous lesson

Before we start this lesson, let’s see what you can remember from this topic. Here’s a quick quiz!

Q1.Which features of RAM make it unsuitable for long term storage? (Select all that apply)

Select three (3) boxes

1/5

Q2.What features of ROM make it unsuitable for long term storage? (Select all that apply)

Select three (3) boxes

2/5

Q3.What are the three categories of secondary storage?

3/5

Q4.Solid state drives are fast to read and write and take less energy to run than other devices. Which feature allows them to do this?

4/5

Q5.Which device has faster read and write speeds?

5/5

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This quiz includes images that don't have any alt text - please contact your teacher who should be able to help you with an audio description.

Unit quizzes are being retired in August 2023

Why we're removing unit quizzes from the website >
Quiz:

Optical and magnetic storage

Don’t worry if you get a question wrong! Forgetting is an important step in learning. We will recap next lesson.

Q1.Optical storage uses light to store data on discs. What device does it use to mark the discs?

1/6

Q2.The marks and gaps on an optical storage disc are called...

2/6

Q3.Magnetic storage also uses discs to store data. What are the discs inside a hard-drive called?

3/6

Q4.Magnetic hard-drives use moving parts to store and read data. Which parts of a hard-drive move when it is operating? (Select all that apply)

Select two (2) boxes

4/6

Q5.When comparing storage devices you should be able to comment on the cost per GB of each type. Which type of storage is the most expensive?

5/6

Q6.Which type of storage typically has the largest capacity? (Can hold the most data)

6/6

This quiz includes images that don't have any alt text - please contact your teacher who should be able to help you with an audio description.

Unit quizzes are being retired in August 2023

Why we're removing unit quizzes from the website >
Quiz:

Optical and magnetic storage

Don’t worry if you get a question wrong! Forgetting is an important step in learning. We will recap next lesson.

Q1.Optical storage uses light to store data on discs. What device does it use to mark the discs?

1/6

Q2.The marks and gaps on an optical storage disc are called...

2/6

Q3.Magnetic storage also uses discs to store data. What are the discs inside a hard-drive called?

3/6

Q4.Magnetic hard-drives use moving parts to store and read data. Which parts of a hard-drive move when it is operating? (Select all that apply)

Select two (2) boxes

4/6

Q5.When comparing storage devices you should be able to comment on the cost per GB of each type. Which type of storage is the most expensive?

5/6

Q6.Which type of storage typically has the largest capacity? (Can hold the most data)

6/6

Lesson summary: Optical and magnetic storage

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The next lesson in:
Computer Systems
is:
Selecting a storage device

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