
Ch09-Main Memory_part1
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
CPU使用哪2個暫存器檢查Process存取的指令是否合法? (複選)
分頁基底暫存器 (Page-table base register, PTBR)
基底暫存器 ( base register )
分頁長度暫存器 (Page-table length register, PTLR)
限制暫存器 ( limit register )
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
以下敘述何者有誤?
基底暫存器 ( base register )負責保存最小的記憶體位址值。
限制暫存器 ( limit register )負責保存process大小值。
OS負責檢查Process存取的指令位址是否合法。
User process不能存取OS process的記憶體位址空間
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
若base register 值=0X100,limit register 值=0X200,若CPU要去讀取0X310值,會發生何事?
CPU成功執行0X310位址的指令
0X310不屬於Process合法讀取位址,發生trap
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
將原始程式資料與記憶體位置連結的動作稱為?
Compile
Address Binding
Loader
Linker
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
將使用者程式原始碼轉換成可執行程式步驟,以下何者正確?
Compiler -> Loader ->Linker
Loader -> Compiler ->Linker
Compiler -> Linker -> Loader
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
執行Address Binding的時機點為何 ?
Compile time
Load time
Execution time
以上皆是
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
以下描述何者有誤?
若程式載入記憶體的位址已經事先知道,則在Compile time ,就會產生 absolute code
若無法事先知道程式載入記憶體的位址,則在Load time 產生relocatable code
若在Execution time才做address binding,代表程式載入記憶體動作前,已完成程式碼定址
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