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题目 题型
用信箱实现通信时，应有()和()两条基本原语。 填空
已知一个求值公式(A2 +3B)/(B-A/5)，若A，B已赋值，试画出该公式求值过程的前趋图，并写出相应的程序来描述该前趋图。 问答
在银行家算法中，若出现下面的资源分配情况： 问答
按下列地址顺序引用内存单元：3635、3632、1140、3584、2892、3640、0040、2148、1700、2145、3209、0000、1102、1100.如果上述数字均为十进制数，页面大小为1KB，而内存中尚未装入任何页，给出使用LRU算法时的缺页次数，并与FIFO时的情况进行比较。 问答
请分别解释在连续分配方式、隐式链接分配方式、显式链接分配方式和索引分配方式中如何 问答
假设一个系统中有5个进程，它们的到达时间和服务时间如下表所示，忽 问答
A computer system consists of , system programs and application programs. 单选
A computer system consists of , system programs and application programs. 单选
A computer system consists of , system programs and application programs. 单选
A computer system consists of , system programs and application programs. 单选
A computer system consists of , system programs and application programs. 单选
A computer system consists of , system programs and application programs. 单选
Thread （线程） can be implemented in . 单选
In OS, short term schedule （调度） means . 单选
Which one of the following item is not shared by all threads in a process 单选
In the paged memory management system, the address is composed of page number and the offset within the page. In the address structure shown in the following figure, . 单选
Virtual memory is based on The Principle of Locality. Which of the following statements about The Principle of Locality is correct? 单选
In UNIX i-node scheme, a directory entry contains only two fields: the file name (14 bytes) and the number of the i-node for that file (2 bytes). These parameters （参数） limit the number of files per file system to . 单选
The time required to read or write a disk block is determined （决定） by three factors. Which one dominates （主导，占优势） the other two times? . 单选
The chmod command （命令） 单选

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