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Ch08-Deadlock

Authored by 徐leo 徐leo

Computers

University

Used 1+ times

Ch08-Deadlock
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10 questions

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1.

MULTIPLE SELECT QUESTION

45 sec • 1 pt

Deadlock成立的特徵為何(複選)?

Mutual exclusion

Hold and wait

No preemption

Circular wait

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Deadlock成立的要件中,「一次只有一個Thread/process 可以使用資源」是指?

Mutual exclusion

Hold and wait

No preemption

Circular wait

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Deadlock成立的要件中,「被占用的資源不能被搶奪使用,必須等到使用該資源的thread/process釋放」是指?

Mutual exclusion

Hold and wait

No preemption

Circular wait

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Deadlock成立的要件中,「必定有一個Thread/process 已經占用一個資源,且它同時等待另一個已被占用的資源」是指?

Mutual exclusion

Hold and wait

No preemption

Circular wait

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Deadlock成立的要件中,「Threads 集合元素存在T0->T1 -> T2 ->Tn->T0 關係」是指?

Mutual exclusion

Hold and wait

No preemption

Circular wait

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

以下描述何者有錯?

沒有發生Circular wait,就一定沒有Deadlock

如果有Circular wait發生,若每個資源只有一個instance,一定會發生deadlock

如果有Circular wait發生,若每個資源有一個以上instance,一定會發生deadlock

7.

MULTIPLE SELECT QUESTION

45 sec • 1 pt

下列何者為處理deadlock的方法?(複選)

預防 ( deadlock prevention )

避免 ( deadlock avoidance )

偵測 deadlock後去復原

忽略 deadlock發生

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