
Ch06-Synchronization Tools_part2
Authored by 徐leo 徐leo
Computers
University
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9 questions
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1.
MULTIPLE SELECT QUESTION
45 sec • 1 pt
下列哪一個是OS提供的同步工具?(複選)
memory barrier
mutex lock
semaphore
2.
MULTIPLE SELECT QUESTION
45 sec • 1 pt
mutex lock 使用哪2個atomic function處理boolean variable?(複選)
wait ( )
acquire ( )
release ( )
signal ( )
3.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
以下對於busy waiting描述何者有誤?
process未能進入CS,只能不斷呼叫acquire( )或wait(),等待進入CS
搶不到CPU資源
執行過程是在浪費CPU資源
4.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
以下哪一個同步方法可以解決Busy waiting 問題?
memory barrier
semaphore
peterson's solution
5.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
以下哪一個對spinlock描述有誤?
是一種mutex lock
不須做context switch
沒有 busy waiting 問題
6.
MULTIPLE SELECT QUESTION
45 sec • 1 pt
semaphore使用哪2個atomic function處理boolean variable?(複選)
wait ( )
acquire ( )
release ( )
signal ( )
7.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
以下哪一個是semaphore的正確使用方法?
wait (s);
critical section
signal (s);
wait (s);
critical section
wait (s);
signal (s);
critical section
wait (s);
signal (s);
critical section
signal (s);
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