systems software Flashcards
Os usually offer one of three major types of interface
- graphical user interface
- menu driven interface
- command line interface
what is user interface?
Os provides users with an interface so that they can interact with the computer
(gui, mdi, cli)
Security?
they give different users different permissions
5 roles of the operating system
- memory management
- peripheral management
- multi tasking
- security
- user interface
memory management?
the OS will ensure that each program that loads has its own space on the RAM
What is peripheral management?
the OS controls the peripheral and gives programs to access them
multi-tasking?
many programs can run at the same time, the OS enables this by allowing processes to take it in turn or getting the shortest job done first
what does a utility software do?
- keeps system secure
- keeps storage disk organised
- maintain the system
data compression software?
lossy - unrequired data is permanently removed
lossless - unrequired data is temporarily removed
What does FAT stand for
file allocation table
back-up software?
copy the data and store it somewhere else
what are the 5 ways the utility software - keeps system secure
- organised
and maintained?
- encryption software
- formatting software
- defragmentation software
- data compression software
- back up software
formatting software?
prepares storage devices for data storage and creates sectors and FAT table
defragmentation software?
building block are broken up, defrag reorganises these blocks using FAT table
encryption software?
where data is scrambled before being sent across the network
