DT6 Optical Storage

WJEC Digital
Technology

Unit 1:

The digital world

DT6:

Optical storage

Name:……………………………….........

Class: ………………

Date: …………….....

2

Starter

Name these storage devices and identify their purpose.

Name this storage device

What is the purpose of
this device?

Match them up

These characteristics are used to decide what type of storage is best suited to a given purpose. Match up the
characteristics to correct statement.

1. Capacity

A. This refers to how quickly the data can be read and transferred from
the storage device.

2. Cost

B. This refers to how easy is it to transport from one place to another.

3. Speed

C. This refers to how expensive per byte it is.

4. Portability

D. This refers to longevity – how well does it maintain performance over
time?

5. Durability

E. This refers to how resistant it is to external factors such as being
dropped, scratched and how it responds to being in extreme conditions.

6. Reliability

F. This refers to how much space is available on the storage device.

Optical storage

Key Questions:

Use the bars below to rank optical storage against
the different storage characteristics. You must justify

your answer.

Capacity

10 = Good 1 = Bad

Justification

Cost

Justification

Optical storage

Key Questions:

Use the bars below to rank optical storage against
the different storage characteristics. You must justify

your answer.

Speed

10 = Good 1 = Bad

Justification

Portability

Justification

Optical storage

Key Questions:

Use the bars below to rank optical storage against
the different storage characteristics. You must justify

your answer.

Durability

10 = Good 1 = Bad

Justification

Reliability

Justification