Unit_06: OS Flashcards
1
Q
How do you enter UNIX commands ?
A
Type them using keyboard
2
Q
user > app programs > OS > hardware
A
user > app programs > OS > hardware
3
Q
diff between app soft and OS ?
A
- App soft doesn’t communicate directly with the comp hardware
4
Q
Why supervisor program the most important OS program
A
It control the entire OS and loads into memory other OS programs( called non-resident) from disk storage only as needed
5
Q
Diff between resident and non-resident program
A
- Programs which remain in memory are resident
- Programs which are loaded-in from disk storage as required are non-resident
6
Q
Main functions of an OS ?
A
(1) Manage the comp’s resources
(2) Establish a user interface
(3) Execute and provide services for app software.
