System softwares Flashcards
What are the main functions of an operating system?
- Communicate with internal & external hardware
- Provide a user interface
- Provide a platform for different applications to run
- Allow the computer to multi-task
- Deal with file management & disk management
How does the device driver help the operating system?
The OS uses it to communicate with internal hardware or peripherals connected to the computer system
What does an user interface do?
Allows the user to interact with a computer system
What is the most common type of interface?
Graphical User Interfaces (GUI)
What does the GUI do?
Designed to be easy for everyday users by making them visual, interactive and intuitive
What are multi-tasking OSs?
They are operating systems that can run multiple applications at the same time.
What is the OS responsible for?
File management
What does defragmentation do?
Puts broken up files back together
What is full backup?
Where a copy is taken of every file on the system.
- Often uses a lot of storage
- Can take a long time to create, but is faster to restore from
What is incremental backup?
Where only files created or edited since the last backup are copied
- Use less storage space
- Quicker to create
- Full system restore is slow
What is compression software?
Reduces the size of files so they take up less disk space
What is encryption software?
Encrypts data to stop third-parties from accessing it
