2.4 Operating systems Flashcards
Single user operating system - home
Provides facilities to be used on one computer by one user
Easy to maintain and debut
Supports one user at a timer
Tasks take longer to complete
Idle time is higher
multiuser - network system
more than one used to access the computer at the same time or different time
Linked to a network so it can be accessed remotely
Each user can access the same document of different from their own pc
If one computer has a problem not all are affected
Viruses spread easily
Complex to spread easily
Single processor
Performs one process at a time, creates a queue
Time slices are short and give the user the impression that program is running continuously
Slower processing than multiprocessor OS
less reliable
Failure of processor = failure of system
Open source
Source code is available for use and modification
Free/cheap
Support not free
Increased security
Multiprocessor
Two or more processors in close communication with each other but share the same power supply memory and storage.
More work done in less time
Failure of one processor will not attract the overall function
More expensive
Complete operating system required
Feed can be affected if a processor fails
Off the shelf
Ready made and available for sale to the general public
Available immediately
Less training
Annual fee
Bespoke
Designed to meet to specific needs of the business
Will be updated based on budget and requirements
Expensive upfront costs
Dependant on developer
