Secondary Storage #2

Secondary Storage #2

Comparing devices and storage requirements

Multiple Select

In this lesson you are going to learn to ... ?

• Compare storage devices on different characteristics

• Choose storage device for purpose

• Calculate storage requirements arithmetically

Multiple Select

What three types of secondary storage devices should you be familiar with?

• magnetic

• optical

• solid-state

• DNA

Multiple Select

What characteristics of storage devices will you be using for comparison?

• storage capacity

• read access speeds

• portability

• cost

• energy consumption

Multiple Choice

Which would be the best choice of storage device for this application?

A web server storing game data for players in an online game

• magnetic hard disk drive

• solid-state drive

• optical CD-ROM

• Flash USB drive

Multiple Choice

Which would be the best choice of storage device for this application?

Storing streaming video camera images from CCTV

• magnetic hard disk drive

• solid-state drive

• optical CD-ROM

• Flash USB drive

Multiple Choice

Which would be the best choice of storage device for this application?

Distributing free sample editions of a new software program to potential customers

• magnetic hard disk drive

• solid-state drive

• optical CD-ROM

• Flash USB drive

Multiple Choice

Which would be the best choice of storage device for this application?

Taking a copy of a software project on holiday with you so you can let your friend see it

• magnetic hard disk drive

• solid-state drive

• optical CD-ROM

• Flash USB drive

Fill in the Blank

1 byte is the same as ____ bits

Fill in the Blank

How many bytes are there in 1 KiB?

Multiple Choice

1 MiB is exactly 2 to the power of ____ bytes

• 10

• 20

• 30

• 40

Multiple Choice

1024 MiB is the same as 1 _______

• Tebibyte

• Gibibyte

• Kibibyte

• Mebibyte

Multiple Choice

The exact number of bytes is 1 MiB is _______

• 1,048,576

• 1024

• 1,073,741,824

• 1,000,000

Multiple Select

In this lesson I have learned to ...

• compare capacity, speed and portability of secondary storage devices

• select appropriate type of storage to fit purpose

• create arithmetic expressions to calculate storage requirements

Open Ended

Thinking Hard

What was the most important thing you’ve learnt in this lesson and why?

(press Shift+Enter to take a new line ...)

Poll

How much of this lesson have you understood?

• None of it

• Some of it

• Most of it

• All of it