1-which algorithm is non-preemptive:
a)SJF
b)RR
c)PRIORITY
d)FCFS
2- Direct memory access to :
a)increase cpu speed..
b)……………..
c)……………….
3-cpu utilization:5%
disk:92%
IO: 3%
جايب ال utilization for OS والسؤال كيف ممكن نحسن الPerformance ؟
a)increase degree of multi programing
b)increase speed of cpu
c)increase space in memory
d)…………………………
4- paging is to solve:
a) external fragmentation
b)internal fragmentation
c)……………………………
5- which FAT allocation techniques suffer from internal fragmentation:
a)contiguous allocation
b)indexed allocation
c)linked allocation
6- system call is :
a) an interrupt that …..
b) software ……
7- flow control is used to:
a)reduce overflow from sender
b)reduce overflow from receiver
c) stop collision while transmission
8-
سؤال عن شابتر 11 free space management مو فاكرته بس من اجاباته:
a)bit vector
b)linked list
c)grouping
d)counting
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