Answer all the questions.
Emily is creating a film for a school project using a digital video camera and will transfer the videos to a computer for editing.
The computer 2GB of storage free.
Calculate the number of videos that could be stored on the computer if each video was 200MB in size. You must show your working.
A file size has a size of 72,000,000,000 bits.
Calculate the file size in megabytes and gigabytes. You must show your working.
Calculate how many bits there are in a file with a size of 20 megabytes.
You must show your working.
Match each statement with the correct image type.
Bitmap | Vector | |
|---|---|---|
Made up of pixels | ||
Take up more storage space and memory | ||
Take up less storage space and memory | ||
Made up of mathematically defined objects. | ||
Dependent on resolution of printer or display device | ||
Not dependent on resolution | ||
Not scalable. Pixilation occurs when the image is over-enlarged | ||
Scalable | ||
Common use photographs and web pages | ||
Use in Logos, web icons and engineering drawings. |
St. Ignatius Catholic School are considering whether to move all of their data from the local server on site to a cloud-based service provider.
Discuss the issues the school should consider before making a decision.
What is meant by resolution?
Name two types of compression.
What data is in the form of sound waves?
What process is used to record analogue sound at regular intervals so it can be converted to digital?
These characteristics are used to decide what type of storage is best suited to a given purpose. Match up the characteristics to correct statement.
| Draggable item | arrow_right_alt | Corresponding Item |
|---|---|---|
Speed | arrow_right_alt | This refers to how expensive per byte it is. |
Cost | arrow_right_alt | This refers to how much space is available on the storage device. |
Reliability | arrow_right_alt | This refers to how quickly the data can be read and transferred from the storage device. |
Durability | arrow_right_alt | This refers to how easy is it to transport from one place to another. |
Capacity | arrow_right_alt | This refers to how resistant it is to external factors such as being dropped, scratched and how it responds to being in extreme conditions. |
Portability | arrow_right_alt | This refers to how much space is available on the storage device. |
A large supermarket would like to improve the security of their data and have decided to use magnetic storage to backup all their data.
Explain TWO reasons why magnetic storage is the most suitable for backing up data.
Identify the type secondary storage.
Optical | Magnetic | Solid-state | |
|---|---|---|---|
CD | |||
USB Flash Drive | |||
SD Card | |||
Hard Drive | |||
DVD |