An application server is running slowly. After viewing performance monitoring data it is detected that the disk queue length is high. Which of the following could BEST resolve the situation?() A. Add more disk drives.B. Increase the amount of virtual memory.C. Add a faster processor.D. Add more memory to stop paging to disk.
An application server is running slowly. After viewing performance monitoring data it is detected that the disk queue length is high. Which of the following could BEST resolve the situation?()
A. Add more disk drives.
B. Increase the amount of virtual memory.
C. Add a faster processor.
D. Add more memory to stop paging to disk.
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阅读以下说明和C++程序，将应填入(n)处的字句写在对应栏内。【说明】字符串在程序设计中扮演着重要角色。现需要设计字符串基类string，包含设置字 符串、返回字符串长度及内容等功能。另有一个具有编辑功能的串类edlt_string，派生于string，在其中设置一个光标，使其能支持在光标处的插入、删除操作。【程序】include ＜iostream.h＞include ＜stdio.h＞include ＜string.h＞class string{int length;char *data;public:int get_length() {return length;}char *get_data() {return data;}~string() {delete data;}int set data(int in_length, char *in_data);int set_data(char *data);void print() {cout＜＜data＜＜endl;}};class edit_string: public string{int cursor;public:int get_cursor() {return cursor;}void move_cursor(int dis) {cursor=dis;}int add_data(string *new_data);void delete_data(int num);};int string::set_data(int in_length,char *in_data){length=in_length;if(!data)delete data;(1)strcpy(data,in_data);return length;}int string::set data(char *in_data){(2)if(!data)delete data;(1)strcpy(data,in_data);return length;}int edit_string::add_data(string *new_data){int n,k,m;char *cp,*pt;n=new_data-＞get_length();pt=new_data-＞get_data();cp=this-＞get_data();m=this-＞get_length();char *news=new char[n+m+1];for(int i=0; i＜cursor; i++)news[i]=cp[i];k=i;for(int j=0; j＜n; i++,j++)news[i]=pt[j];cursor=i;for(j=k; j＜m; j++,i++)(3)news[i]='\0';(4)delete news;return cursor;}void edit string::delete_data( int num){int m;char *cp;cp=this-＞get_data();m=this-＞get_length();for(int i=cursor; i＜m; i++)(5)cp[i]='\0';}
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