
Ch09-Memory Management_part02
Authored by 徐leo 徐leo
Computers
University

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10 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
總記憶體空間足夠,但卻沒有合適的Partitions供Program使用,稱為?
External Fragmentation
Internal Fragmentation
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Program分配到的記憶體空間比所需空間大,未使用到的部分,稱為?
External Fragmentation
internal Fragmentation
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
External Fragmentation有兩種解決方法,請問Paging是屬於哪一種解決方法所用的技術?
聚集 ( compaction )
不分配連續的記憶體空間 ( non-contiguous memory space )
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
以下對於分頁 ( Paging )描述何者有誤?
由OS與電腦硬體共同實作
允許程式以連續記憶體方式載入
會有一個page table紀錄 page 與 frame 的對應
仍有Internal fragment問題
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
以下對於Page table 描述,何者錯誤?
協助將 logical address 對應出 Physical address
由OS 負責Page table
一個Process有屬於自己的Page table
Page table 存放在HD中
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
假設系統有40個User program ,都會呼叫libc程式庫(2MB),透過shared page 技術,共需要多少記憶體空間供libc使用?
80MB
2MB
7.
MULTIPLE SELECT QUESTION
45 sec • 1 pt
解決page table 太大可能也會有external fragmentation,解決方法為何?(複選)
階層式分頁 ( Hierarchical Page Table)
雜湊分頁表 ( Hashed Page Table )
反轉分頁表 ( Inverted Page Table )
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