Secondary Storage Flashcards
Explain what a magnetic hard disk?
It is reliable, high capacity and low cost.
Name the different types of secondary storage.
- Magnetic hard disk
- Optical disk
- Flash memory
Why is an optical disk good for transferring files?
- Good capacity
- Low cost
- Lightweight and portable
How much data can a CD hold?
700MB
How much data can a DVD store?
4.7GB
What are the positives and negatives of flash memory?
Positive
- Good capacity
- Used in hand held devices
Negative
-More expensive than a hard disk and has a smaller capacity
What are the main considerations when selecting storage?
- Capacity
- Speed
- Portable
- Durability
- Reliability
Why does a computer need secondary storage?
Is needed to store data and programs when the power is switched off.
What, with reason, is the most suitable storage for transferring work between home and school?
Flash because it has a good storage and is easy to transport.
What, with reason, is the most suitable storage for distributing a software application?
Optical because it is cheap and lightweight and portable.
What, with reason, is the most suitable storage for storing work and programs on a large school network?
A hard disk as it is low cost so you can get many and it is reliable, permanent and high capacity.
What, with reason, is the most suitable storage for storing images in a digital camera?
Solid storage as it’s not affected by the cameras movement and is portable and lightweight.
