Unit 1: Page 7: Types of Operating Systems. Flashcards
What is an Operating System?
It’s what coordinates all the operations of your computer system. It manages all the resources on the computer and controls the software and hardware.
What are the four types of operating systems
- Real-time operating system (RTOS)
- Single-user single task operating system
- Single-user multitasking operating systems.
- Multi-user operating systems
Describe RTOS.
Inputs are processed and responded to instantaneously.
Describe Two benefits of using RTOS
- It provides fast responses
- It is best used where inputs must be processed and responded to immediately.
Give two examples of RTOS.
- Air Traffic Control Systems
- Traffic Lights
Describe Single-user Single Task Operating Systems
One user can use the system at a time, and one application can run at a time.
Describe two benefits of using Single-user Single Task operating systems.
- It requires fewer resources.
- It is best used on devices that have limited processing and memory, which can’t handle running multiple applications.
Give two examples of a Single-User Single task operating system.
- Basic Mobile phone
- Simple handheld virtual pet
Describe Single-user multitasking operating systems.
One user can use the system at a time, but many applications can run simultaneously.
Describe two benefits of using Single-user multitasking operating systems.
- It allows the user to use several applications at once.
- It is best used on systems where a user needs to be able to switch quickly between applications.
Give an example of a Single-user multitasking operating systems.
An office worker using a laptop or desktop PC
Describe Multi-user Operating System.
Many users can use the system at the same time and can run many applications simultaneously.
Describe two benefits of using a Multi-user Operating System.
- Processing and resources can be shared by multiple users.
- It is best used where many users need access to the same processing or resources at the same time.
Give an example of a Multi-user Operating System.
Web servers.
Name three factors that may affect the Performance of Operating Systems
- Hardware factors
- Malware
- Virtual Memory factors
Name three Malware factors that may affect an operating systems performance.
- Worms
- Viruses
- Spyware
Name Four hardware factors that may affect an operating systems performance.
- Limited RAM capacity
- Number of Cores
- Limited CPU speed
- Slow hard-disk read/write (fragmentation)
Name two Virtual Memory factors that may affect an operating systems performance.
- Heavy use of virtual memory relies on slow disc transfers rather than the very fast working memory (RAM) data transfers.
- Not enough HDD space allocated to extend RAM (pagefile two small - the pagefile is a section of the hard disk that is reserved as an extension of the RAM)
